Card Identification Forum

Hard to tell from the database scans whether the gray or white backs belong to Topps or OPC.  I don't see any other way to tell the difference.

I see they are different sized sets? Is that a clue? I honestly don't know. The OPC I collect have French on them or say, "Printed in Canada"...but I know nothing about the cards you are asking about.

The one on the left says "COLLECT ALL 154 CARDS" and the one on the right says "COLLECT ALL 132 CARDS" at the bottom.

Looking at the scans on the site, it seems like 154 = OPC and 132 = Topps for series one. But I could be wrong.

I didn't notice the 154 vs 132...but the "154" backs don't have French or Printed in Canada as Ron E posted.

I don't think Ron was referring to this specific set. Many older O-Pee-Chee sets do have that language but not necessarily the Batman ones. The set numbering seems like the best bet 

I was just referring to Baseball sets.

It's seems typical for OPC to have a lighter/whiter cardstock.

Topps Series 1 has 132 with 22 stickers, while OPC Series 1 has 154 with the stickers converted to cards #133-154.