Posted By:
davidcyclebackAs Andy noted, the W600s aren't photographs but mechanical prints.
Some baseball card collectors consider cards to be small like Topps cards or T206s or business cards, and consider a postcard or W600 to be too large to be considered trading cards. Beyond the coins, pins, posters and such, I'm sure we can each pick out things in the Standard Catalog of Baseball Cards that we don't consider trading cards. I suspect few of us consider the Baseball Magazine Premiums to be cards.
I like the term "genre." As in, a 1959 Armour coin isn't a baseball card, but it's in the genre of baseball cards. To be in the genre, it has to be something that baseball card collectors collect.