The R96 American cards usually have "Aquatoned in USA" at the bottom of the card. The Canadian version of these usually has "Lithographed in Canada" at the bottom. There are often differences in the movies listed between the two cards. The Judy Garland cards below show these two types with different captions.
There is another version of these cards that doesn't say anything at the bottom, there is no "Aquatoned in USA" or "Lithographed in Canada" at the bottom. The Clark Gable cards below show these two versions.
Bobby from Canada has some of these blank versions that he got in Canada and I have seen blank versions in groups from the USA. All of the blank versions I have seen have movie captions that match the USA captions, with none matching the Canadian captions. I am wondering if there are any of these blank versions with captions that match the Canadian versions.
My Moviecard Website shows pictures of most of the American R96 cards and some of the Canadian cards so you can check your cards against what I have shown.
American R96 checklist and scans:
http://www.moviecard.com/zamerican/assorted/r96.html
Canadian O-Pee-Chee checklist and scans:
http://www.moviecard.com/misc_n-s/opc-bigbw.html#RTFToC1
Also, if anyone has any additional scans for cards without scans on these checklists, I would love to get them to add to these lists.