Maybe I'm totally ignorant on this, but it looks to me that the card numbers are on the backs in the upper right corner. There are also numbers in the lower left corner but those might be some other code. Maybe someone who actually has these cards can give some input.
I collect: Baseball, Football, Hockey, Mostly Vintage pre1980, My Homie teams - Washington/Baltimore Teams Senators (Twins, Rangers), Expos/Nationals, Redskins, Capitals, Bullets/Wizards - HOFers - Non-sport (mostly TV shows and movies).
My Trade List is very much a work in progress
CaptKirk42s Trading Card Blog Curly W Cards Strive For '65 YouTube klandersen42