I agree with Carl and consider Granges true rookie t be the 26 Spalding promotional card.
Probably issued earlier than the Shotwells as the movie came out late in 1926' October I think?
I definitely give a nod to the Star Player card or the Rogers Peet as those are pretty damn close too. Most SPC cards were of college players so that could be a clue as well.
Great topic, lets see some examples
