U.S. Proof Set Token - Philadelphia Mint

This is a token from a U.S. Proof Set which were issued in cellophane sealed packets. - U.S. Proof coins were once minted at the Philadelphia Mint. They are now minted at the San Francisco Mint (with exceptions) - This particular type was used only in 1955-1964 dated sets. This one was taken from a 1964 set. - Marking is in blue ink on thin embossed tin.
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