Depending on the condition of a silver quarter and the year in which it was minted, it can be worth up to $5,820 as of 2015. Silver quarters minted before 1965 are worth at least $3.05. Quarters that were minted before 1931 can be worth anywhere from $3.73 to $5,820.
Silver Washington quarters from 1932 to 1964 can be worth $3.05 if they are in good, fine or extremely fine condition and can be worth $3.30 if they are uncirculated. Draped Bust quarters from 1796 to 1807 can be worth $441 if they are in good condition, $2,530 if they are in extremely fine condition and $5,820 if they are uncirculated.