2019-20 Mosaic

• G-001 beckett.com/news pages for this release (main checklist and the 'Parallels Gallery and Where to Find Them' guide) both returned HTTP 403, and direct HTTP access to every source domain is blocked by the session egress proxy (WebFetch only). Cross-check depth reduced accordingly.
• G-002 Release date disagreement: cardboardconnection lists 'Hobby - May 20, 2020; Retail - April 29, 2020'; dacardworld and steelcitycollectibles both list the hobby box as 2020-05-20 (used); sportscollectorsdaily's pre-release preview stated April 22, 2020; retailer pages list hanger 2020-05-14 and blaster/FOTL/Fast Break/Choice 2020-05-22. Retail street date is therefore unresolved.
• G-003 Fast Break print runs (Blue /85, Purple /50, Pink /20, Gold /10, Black 1/1) are single-source (cardboardconnection.com only). Retailer pages (steelcitycollectibles, gogts.net) confirm the six Fast Break parallel names and their Fast Break-box exclusivity but state no serial numbers.
• G-004 Choice print runs (Fusion Red /88, Black Gold /8, Nebula 1/1) are single-source (cardboardconnection.com only). dacardworld confirms the four Choice parallel names and that Peacock is a super-short print, but gives no numbering.
• G-005 Orange Fluorescent /25 blaster-exclusivity is single-source (cardboardconnection.com); the steelcitycollectibles blaster description only says '4 Mosaic parallels per blaster' without naming them. An eBay product title ('Blaster Box - Orange Fluorescent') is weak corroboration only.
• G-006 Genesis channel conflict: dacardworld lists Genesis among mega box exclusives while steelcitycollectibles cites 'ultra-rare Mosaic Genesis Parallels' in the 20-card hanger box. Recorded as channel=mega; may span both retail SKUs. [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.]
• G-007 Reactive Blue numbering conflict: the base-set parallel lists on cardboardconnection and checklistcenter show Reactive Blue with no serial number, but cardboardconnection's per-insert 'MOSAIC PARALLELS' lines repeatedly show 'Reactive Blue #/99'. Recorded as unnumbered for the base set.
• G-008 Red numbering conflict: cardboardconnection and checklistcenter both list base Red with no serial number, but hobby box descriptions (steelcitycollectibles, gogts.net) say 'Mosaic Red, Blue, Purple, White, Gold, and Black (#'d from 99 to 1)', which could imply Red is numbered. Recorded as unnumbered.
• G-009 dacardworld's Choice box description mentions 'Two Choice Red and Green Rookies' per box, implying Choice Red and Choice Green rookie parallels that no checklist source (cardboardconnection, checklistcenter) lists as named base parallels. Not recorded; existence and print runs unverified.
• G-010 Snakeskin Purple print run: cardboardconnection and blowoutcards both state /24, but an eBay listing shows a 2019-20 Mosaic Kobe 'Purple Snakeskin' numbered 20/20. Possible confusion with Purple & Gold /20, or a second Purple variant. Recorded as /24.
• G-011 Total parallel count disagreement: waxpackhero.com states the product has '22 different parallels'; this file records 34 base parallels across all channels (18 Mosaic hobby/retail + 4 Choice + 6 Fast Break + 2 Tmall + 4 Snakeskin). The 22 figure likely counts only the standard hobby/retail Mosaic family plus Choice. [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.]
• G-012 Channel attribution is UNKNOWN for the four Snakeskin parallels: they come from Kobe Bryant Career Highlights tribute packs, which map to none of the allowed channel values (hobby/retail/blaster/mega/fanatics-exclusive/choice/FOTL/multi). Fast Break parallels are recorded as channel=hobby based on dacardworld's 'Fast Break Basketball Hobby Box' listing and gogts.net's 20-box/18-pack/8-card hobby configuration; Tmall Red Wave/Gold Wave are recorded as retail as an international retail platform exclusive. [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.]
• G-013 RC designations are single-source (cardboardconnection.com), which marks cards 201-250 (Rookies) and 261-280 (NBA Debut) as RC. Cards 1-200, 251-260 and 281-300 are recorded as rookie_flag=no on the absence of an RC marker rather than an explicit 'no'; individual borderline cases (e.g. #170 Duncan Robinson, #176 Kenrich Williams) were not separately verified.
• G-014 Autograph set inventory disagreement: checklistcenter lists 4 autograph sets (Autographs Mosaic 59, Rookie Autographs Mosaic 40, Scripts 51, Rookie Scripts 39); cardboardconnection lists 7, adding Autographs Mosaic Choice Fusion Red (59), Rookie Autographs Mosaic Choice Fusion Red (39) and Autographs Fast Break (98). The three extra entries are single-source and are arguably channel-exclusive parallel versions rather than distinct sets. Also unexplained: Rookie Autographs Mosaic is 40 cards but its Choice Fusion Red version is 39. [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-17: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: still open; 4 of 34 parallels lack a sourced channel.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.] [REVIEWED 2026-08-19: count is now 75 of 105 - the channel pass resolved -71 of these with cited evidence. Gap remains open for the rest.]
• G-015 Base subset boundary between Hall of Fame and MVPs was inconsistent within cardboardconnection itself (one pass returned 'Hall of Fame: 281-300, MVPs: 296-300'). Resolved to Hall of Fame 281-295 / MVPs 296-300 using the Tmall product description's counts (15 Hall of Fame, 5 MVPs) and the card content at 296-300. Panini did not publish subset labels per card number in any source read.
• G-016 Card #269 (Zion Williamson) was returned by cardboardconnection with the team string 'Pelicans' only; normalized to 'New Orleans Pelicans' to match cards 267 and 279. Cards 251-260 (USA Basketball) carry 'USA Basketball' as team_or_school rather than an NBA franchise, per the source.
• G-017 Base checklist is primarily from cardboardconnection.com. checklistcenter.com independently confirmed cards 1-30 and 195-215 (exact match) and the 300-card total, but a full 300-card second-source line-by-line verification was not possible: breakninja.com's page exposes only team-sorted navigation, tcdb.com's set page truncates its 'Inserts and Related Sets' listing after 8 entries, and beckett.com returned 403. Cards 31-194 and 216-300 are effectively single-source.
• G-018 "Center Stage": no sourced own-parallel-tier colour list found for this non-base set. tcdb Inserts.cfm lists no colour-suffixed variant of this set.
• G-019 "In It to Win It": no sourced own-parallel-tier colour list found for this non-base set. tcdb Inserts.cfm lists no colour-suffixed variant of this set.
• G-020 "Overdrive": no sourced own-parallel-tier colour list found for this non-base set. tcdb Inserts.cfm lists no colour-suffixed variant of this set.
• G-021 "Stained Glass": no sourced own-parallel-tier colour list found for this non-base set. tcdb Inserts.cfm lists no colour-suffixed variant of this set.
• G-022 "Swagger": no sourced own-parallel-tier colour list found for this non-base set. tcdb Inserts.cfm lists no colour-suffixed variant of this set.
• G-023 "Autographs Mosaic Choice Fusion Red": no sourced own-parallel-tier colour list found for this non-base set. Already a colour-specific leaf set on tcdb (no further suffix variants beyond this name).
• G-024 "Rookie Autographs Mosaic Choice Fusion Red": no sourced own-parallel-tier colour list found for this non-base set. Already a colour-specific leaf set on tcdb (no further suffix variants beyond this name).
• G-025 "Autographs Fast Break": 95 of the 98 cards recorded in sets.csv were written. tcdb renders only 95 rows (https://www.tcdb.com/Checklist.cfm/sid/237560/2019-20-Panini-Mosaic---Fast-Break-Autographs plus Gallery.cfm PageIndex 7-10, which reports Total Cards 95). The three missing players are DeAndre Jordan, Chuma Okeke and Jaylen Nowell - identified by diffing the tcdb roster against the 98-name Autographs Fast Break roster at https://www.cardboardconnection.com/2019-20-panini-mosaic-basketball-cards (roster use only; that site renumbers coded sets and may not supply card numbers). No source found gives the printed FB- code for these three, so their rows are withheld rather than guessed.
• G-026 "Autographs Mosaic Choice Fusion Red": 58 of the 59 cards recorded in sets.csv were written from https://www.tcdb.com/Checklist.cfm/sid/238016/2019-20-Panini-Mosaic---Autographs-Mosaic-Choice-Fusion-Red (its header also states 58). The one card absent is AM-KIV Kyrie Irving, which IS present on the Autographs Mosaic base page. Unresolved whether Kyrie was genuinely not printed in this Choice-exclusive parallel or tcdb is simply missing the row.
• G-027 "Scripts Autographs": sets.csv records card_count 51 but tcdb renders 52 rows and its own header states 52 (https://www.tcdb.com/Checklist.cfm/sid/232692/2019-20-Panini-Mosaic---Scripts). All 52 were written; the SC- prefix is confirmed by many free-text eBay seller titles. sets.csv card_count 51 (sourced to cardboardconnection.com/checklistcenter.com) may need review by whoever owns sets.csv - this agent must not modify it.
• G-028 "Rookie Scripts Autographs": sets.csv records card_count 39 and tcdb's own page header also says 39, but tcdb actually renders 40 rows, confirmed independently on https://www.tcdb.com/Gallery.cfm/sid/232689/2019-20-Panini-Mosaic---Rookie-Scripts?PageIndex=4 which holds a full 10 tiles (indices 31-40). All 40 were written. Either the tcdb header is stale or the 40th card (RS-THR Tyler Herro, which tcdb renders out of alphabetical order at the end) is an erroneous extra row. sets.csv card_count untouched.
• G-029 "Rookie Scripts Autographs" card RS-ATH: tcdb prints card number RS-ATH for Matisse Thybulle (https://www.tcdb.com/Checklist.cfm/sid/232689/2019-20-Panini-Mosaic---Rookie-Scripts). Every other code in this set is derived from the player's initials; RS-ATH does not fit Matisse Thybulle, and the sibling Rookie Autographs Mosaic set uses RA-MTH for him. Written verbatim as tcdb renders it, but no marketplace listing title was found to corroborate RS-ATH, so it may be a tcdb typo for RS-MTH. Needs a free-text seller listing to settle.
• G-031 Source calibration record for 2019-20 Panini Mosaic. PASSED for card numbers on this release: tcdb.com Checklist.cfm/Gallery.cfm (prints real AM-, RA-, SC-, RS-, FB- codes; verified against free-text eBay seller titles for RA-RHM, SC-JPT, SC-SMK, FB-CEW, FB-DFS, FB-KJN, and against ViewCard hrefs for the plain inserts), sportscardspro.com (card page https://www.sportscardspro.com/game/basketball-cards-2019-panini-mosaic-autographs/stephen-curry-am-scy prints AM-SCY correctly, so it did NOT renumber this release), comc.com CARD pages. ROSTER-ONLY as always: cardboardconnection.com (used to identify the three Autographs Fast Break players tcdb lacks). tcdb sid enumeration for this release is complete: Inserts.cfm under parent sid 227998 lists 91 insert + 36 parallel sets, every numeric gap inside its sid islands was probed (235131, 237563, 238023, 238024 all 404; 238025 resolves correctly with the same probe slug shape, so the 404s are genuine) and the island boundaries 232216, 232659 and 232702 all 404. No sibling-product parent exists for Mosaic Choice / Fast Break / Tmall - all are filed under 227998. No uncatalogued tcdb subsets were found.

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