PCGS (1932-1954)-S Washington quarter double-struck off-center, with the 2nd strike 85% off-center and also a chain-edge strike. The chain-edge occurred when the coin was struck up against another coin, creating a flat edge on the off-center strike.
Silver Washington quarters are very rare double-struck off-center, and even more so with a chain-edge strike. Because the coin is an "S" Mint, it is dated between 1932-1954.
PCGS AU-55 with attractive golden toning.