I have no knowledge or insight on R310s, and barely even noticed the 8x10 photos mention on the ad. I just know that the Ruth ad is vintage and original.
There was various circumstantial and historical evidence surrounding the item, and that I considered, but I determined the ad is original largely on its own physical evidence. The microscopic images Trey sent me were the clincher, having specific microscopic details one would expect from 1930s printing.
The provenance is fairly decent, in that the original seller was a vintage ephemera and antiques seller who would have a feel for what is vintage, and there's no reason to doubt his claim that the ad came with vintage Yankees letters.
What exactly is the item and how it relates to baseball card history is up for debate by others, and not something I've particularly thought about. But the item is original and vintage.
Last edited by drcy; 06-13-2021 at 02:32 AM.
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