1901-S

The 1901-S Barber dime stands as one of the recognized Semi-Keys of the series, with a circulation mintage of 593,022 pieces from the San Francisco Mint. That total is the lowest business-strike output for any S-mint Barber dime across the 1892 to 1916 run, trailing only the legendary 1894-S, a proof-only issue of 24 coins. Series collectors routinely group the 1901-S with the 1896-S and 1903-S, the three San Francisco issues that anchor the West Coast Semi-Key tier. Heavy turn-of-the-century pocket use and twentieth-century silver melts left a survivor population concentrated in lower circulated grades, growing notoriously thin above Extremely Fine.

Authentication begins with the basics: weight at 2.50 grams, diameter at 17.9 millimeters, and a clean reeded edge of consistent count and depth. The standard fake pathway is an added mintmark, where a counterfeiter files or solders an S onto an 1901 Philadelphia coin, which is far more common than the San Francisco issue. Examine the S under magnification for surface continuity with the reverse field, the correct San Francisco S font of the period, and proper position relative to the wreath bow; an added S often sits at the wrong height, leans off-axis, or shows tooling disturbance where the foot meets the field. Strike quality on genuine 1901-S dimes can run soft on Liberty's hair and the central wreath leaves, a trait noted by Feigenbaum and David Lawrence that should not be confused with wear. Population data from Professional Coin Grading Service (PCGS) and Numismatic Guaranty Company (NGC) shows a thin certified pool above Extremely Fine, with Mint State totals dropping sharply and Gem MS65 pieces genuinely rare.

For set builders, the 1901-S is one of three required San Francisco Semi-Keys, paired with the 1896-S and 1903-S. Problem-free Good through Fine pieces appear at major shows often enough that a patient buyer can land an honest example, with prices climbing from the low three figures to roughly $350 in Fine. Extremely Fine coins step into the mid-hundreds, About Uncirculated pieces trade near $700, and Mint State examples push past $1,000, with choice MS63 coins reaching above $2,000. The smart path is certified coins; avoid raw pieces without a written authenticity guarantee. For broader context on design history and date-by-date rarity, see the Barber Dimes (Liberty Head) series history.