Recently PCGS and NGC have authenticated and certified experimental blanks and planchets struck at the U.S. Mint. These include Clad Ike dollar planchets with an experimental upset rim, a group of 1943 Lincoln cents including experimental blanks and planchets, unique experimental Ike dollar planchets with notations by the Mint on the planchets, a few Jefferson nickel planchets with an experimental finish and a unique Jefferson nickel planchet with an experimental rinse and a notation by the Mint on the planchet.

This is part of the U.S. Mint’s history and production of experimental coinage. These experimental blanks and planchets were previously unknown to the numismatic community.