The error was actually my fault. After the art was approved, I wanted "Grand Opening" on them. GPI consented to do it without making a Die. Using what they call "stick" printing. Looks like it is not quite as accurate as a Die.
A few sticks of the dice came in with the error. The boss emailed GPI and copied me. GPI said send them back. I said "OH NO YOU DON'T" "NEVER" "NADA"