I'm trying to research this postcard that came in as a possible consignment for our Spring auction.
There was a detailed thread on it back in 2014...
thread
Having it in hand, it looks good under a loupe and passes black light tests.
Societe Anonyme, Inc. did use postcards produced by Photo Roto Inc. like this legit 1920's postcard...
Photo Roto, Inc also used the same back type as the Ruth before 1920 as seen with this 1913 postcard...
Here's the back of the other known Ruth RPPC, hard to read but also Photo Roto Inc.
So I guess my question after all this, is the Ruth postcard legit? Is there something I'm missing to suggest that it's not period? Could Societe Anonyme, Inc. have simply used older Photo Roto, Inc. postcard stock to produce the Ruth card in 1920? Any and all help/opinions are much appreciated!