This Ryan premium is about 5 x 7 and tough as heck to find.
All the Rodine HOF postcards and premiums are rare; if anyone has any others I'd love to see them and finish the checklist:
One of a trio of really tough 1951 Hallicrafters premiums (the others are Rosen and Lemon as singles):
This one is real interesting (well, to me). The first time I found one of these, I thought it was some sort of Exhibit proof. It has the same artwork and is not a reprint but oversized and on lighter stock.
Fast-forward several years and I find another, with a very enlightening twist:
This one is post-marked in February 1948 from Brooklyn (where I guess Holmes lived), 2x signed and inscribed by Holmes. The ink on the front doesn't match the ink on the back. I am now thinking it is some sort of autograph request mail reply card that Holmes had ESCO manufacture for him.