1965 Washington Quarter--Struck on a 90% Silver Planchet--AU Details--Rim Damage (NCS). A transitional wrong-planchet error that is the result of an old standard 90% silver planchet intended for the coinage of 1964 getting into the production cycle for the 1965 coins that were to be struck on the new copper-nickel clad blanks. Scarce and always in demand.