For what it's worth this might help. I thought that most everyone knew about these but obviously, I was wrong. One of the "tells" is the affiliation with Jamaica bank (see the stamp on your example). The other is the red smudged cancel mark on the front. I have seen many of these checks most are not endorsements but actual full checks, Not just by Ruth but have also seen Lou Gehrig checks drawn on the same Jamaica Queens bank. Real Ruth checks are on the Chemical Bank and Gehrig checks of which only a handful maybe 5 are known to exist are drawn on his bank in New Rochelle. The checks like these that I have actually held in my hand are laser printed signatures and handwriting most of the time only visible upon close inspection and with magnification. So while with a copy the signature and handwriting will LOOK correct because whatever stylus or process is being used they are using REAL handwriting and signature examples. This same process is being used with photos and just about anything you can imagine. Now there is a LONG SHOT CHANCE that the one you pictured might be OK. It's a VERY outside chance and the things I mentioned above are going to scare away most buyers. Hope this helps
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ALWAYS BUYING VINTAGE AUTOGRAPHS
jim@stinsonsports.com