A 1938-D/S Buffalo nickel graded MS-67 by PCGS. (Images courtesy PCGS)
When you think of errors, you usually think “expensive.” For example, the 1955 doubled die obverse Lincoln cent is not cheap, and with good reason

A 1938-D/S Buffalo nickel graded MS-67 by PCGS. (Images courtesy PCGS)
When you think of errors, you usually think “expensive.” For example, the 1955 doubled die obverse Lincoln cent is not cheap, and with good reason