What is the value of an 1891 US quarter?

Answer 1

According to USA Coin Book, 1891 is the last year that the Seated Liberty Quarter was made. It was produced at the Philadelphia, New Orleans and San Francisco mints. Here are the values below:

Philadelphia (no mint mark): In good condition, this coin is worth about $27 up to about $240 in MS60 mint condition. In MS63 choice uncirculated grade, this coin is worth about $525. Proof coins were also minted here and are worth about $690.

New Orleans (small "O" mint mark): In good condition, this coin is worth about $140 up to about $2,600 in MS60 mint condition. In MS63 choice uncirculated grade, this coin is worth about $5,000.

San Francisco (small "S" mint mark): In good condition, this coin is worth about $27 up to about $240 in MS60 mint condition. In MS63 choice uncirculated grade, this coin is worth about $525.