1940 quarters will hit their 81st year anniversary in 2021.
History:
Washington silver quarters ran from 1932 - 1964 and the design remained the same for decades after the switch from silver to clad.
Some of these quarters were found metal detecting and the quarter in the best condition was found earlier this year at UNH (University of New Hampshire) and is a 1944 date. It was found over 14 inches deep along a creek in the middle of campus.
1/4 ounce of silver!