John, I've uploaded a picture of the 1956 Yankees Action Photo set. These are all 8 by 10 inches. As you can see, they have names printed on them with some appearing to be facsimile autos. So yours could potentially be from "Action Photo" sets for the Cardinals and Dodgers. I only collect Yankee photo sets so I don't know what is out there for other teams.
I've also attached a photo with the 1956 and 1958 team photo set Mantles attached. These are 6 by 8-1/2 inches. As you can see, these differ from the Jay photos quite a bit.
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M.!.c.h.@.3.L. . H.v.n.T
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Don't believe everything you think
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