Listed on the linked TCDB checklist entry for the Number Pieces branch. Number Pieces is one of the best examples of 2006 using player-specific numbering as actual design language, not just a stats note. Source note: Signed memorabilia insert numbered to the quantity shown on the card line, generally tied to the player's uniform number or selected numeral.
Number Pieces and NumbersText, Number, and Letter Inserts/4Adrian Dantley
Listed on the Beckett 2009-10 checklist as part of the Exquisite # Pieces branch. The 50-card # Pieces family is one of the best examples of late-run Exquisite still using numbering itself as design language, with solo, dual, and cross-sport pairings all built into the branch.
Number Pieces and NumbersText, Number, and Letter Inserts/4Adrian Dantley