The answer by a C and I expert was "No." That print only came in one size. Thank you all for your help.
The fact is that
it exists ....... regardless of what any per se "expert" says ...... and you have possession of it.
You need to take a high resolution scan of it, ....
600 to 1200 dpi, ..... and transmit the image to a dozen or so people who might be interested in offering their opinion and/or acquiring it, ..... especially the Cooperstown Museum.
Just be sure you include how you gained possession of it.