PCGS 1966 Washington quarter off-metal struck on a clad dime planchet. The coin is struck on the planchet intended for striking into a Roosevelt dime. MS64 

NGC 1980-P Washington quarter struck on a nickel planchet. The wrong planchet coin is slightly smaller than a normal quarter, and is struck on the planchet of a Jefferson 5c. Washington quarters...

NGC 1970-D Washington quarter struck on clad dime planchet. The coin is a wrong planchet error, having been struck on the much smaller, clad 2.2 gram dime planchet. Dramatic in appearance, with much...

PCGS 1979 Washington quarter struck on a nickel planchet. The wrong planchet coin is slightly smaller than a normal quarter, and is struck on the planchet of a Jefferson 5c. Washington quarters...

PCGS 1966 Washington quarter struck on clad dime planchet. The quarter is struck on the much smaller dime planchet, with much of the outer lettering missing, portions of the design, and weighing only...

NGC 1967 Washington quarter struck on clad dime planchet. The quarter is struck on the much smaller dime planchet, with much of the outer lettering missing, as well as portions of the design, and...

NGC 1970-D Washington quarter struck on nickel planchet. The coin is the design of a quarter, but is struck on the planchet of a nickel, with a weight of 5 grams.   MS64

PCGS 1971-D Washington quarter indented by a Roosevelt dime planchet. The coin has an indent that is the size and shape of a dime planchet that was struck into the quarter and "spread out" during the...