One useful dating aid for decks is a dating code placed on the Ace of Spades at time of manufacture. This was a practice used by United States Playing Card. It used to be generally accepted that this dating started in 1904. This was recently found to be incorrect. Research conducted by Touya Yabuhashi, a scholar from Japan, has provided evidence for the use of the “A” dating code in 1898, and brought the chart up to date to 2022 with numerous corrections.
This practice would have effected National after the take over and just before they closed the Indianapolis plant in 1900.
This practice would have effected National after the take over and just before they closed the Indianapolis plant in 1900.
USPC DATE CODES