Due to the lack of the registered trademark symbol on the tuck, I?d say it was 1990 or a bit before. But let us know if you open it to find out for sure.
Based on my statistical research results,
From 1990 to 1991, when the specifications changed significantly, it seems that the registration of the registered trademark symbol was delayed.
As you all know, BICYCLE, Bee, and TALLY-HO brands are still undergoing subtle design changes on a regular basis, depending on the era. Until the 1980s, USPCC decks tended to allow printing faintness and ink bleeding within certain standards.
USPCC's Playing Cards are printed using a mold, so in order to change the design, it is necessary to create a master plate, so it seems that there was a gap before the registered trademark mark was attached.
Therefore, decks from 1990 to 1992 have many exceptional specifications.