Both sides shown below. The "4" is certainly faint, you can barely make it out. No doubt it is a "4." My copy is slightly better, and they came with two other different #1584 BPOEs that had clear "1584"s on them.
Robert
.
.
Farley Granger (right) in "The Naked Street" (1955).
http://www.antiquegamblingchips.com/StillsB_OthMaleAcs.htm
|