John R Sinnock

Has anyone seen or herd of john r sinnock signature or JS initals on any 1943 us coins.

 

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Here is the bio of John R Sinnock, he designed the Roosevelt dime and Franklin Half Dollar and some commemoratives.
https://www.usacoinbook.com/encyclopedia/coin-designers/john-r-sinnock/
Previous to 46'
I have only found one that has his initials.
http://m.pcgscoinfacts.com/Coin/Detail/7466

 

And maybe on the Sesqi half dollar.
He may have engraved some foreign coins struck by the U.S. Mint.

 

Perhaps not a coin, but an medal?

https://catalog.usmint.gov/franklin...MIhorb38Se1wIVhIVpCh13YQytEAQYAiABEgL_d_D_BwE