1968-S Proof

The 1968-S proof Washington quarter was struck at San Francisco to a recorded mintage of 3,041,506 pieces and marked the resumption of regular U.S. proof coinage after the three-year hiatus from 1965 through 1967, when the Mint issued Special Mint Sets in place of proof sets during the silver-to-clad transition. Two structural firsts mattered for this issue: the proof program moved from Philadelphia to San Francisco, where it has remained since, and the S mintmark appeared on a Washington quarter proof for the first time in the series. The coin carries John Flanagan's portrait of Washington on the obverse with the JF initials at the truncation of the neck and the S mintmark to the right of Washington's hair queue, on the obverse rather than the reverse where pre-1965 mintmarks had sat. The reverse retains the heraldic eagle. Composition shifted with this issue to 75% copper and 25% nickel clad over a pure copper core, at 5.67 grams.

Authentication centers on three points. First, the brilliant proof finish, with deeply mirrored fields, crisp square-edged devices, and the squared rim that separates a proof from a well-struck business strike. Second, the weight test at 5.67 grams, which distinguishes the clad proof from any same-design 90% silver issue at 6.25 grams. Third, the S mintmark location, which sits on the obverse for the first time in the series and is hand-punched into the working dies for this year, occasionally producing minor mintmark positional differences across the run. Cameo, the strong contrast between mirrored fields and frosted devices, occurs on a meaningful share of dies, and Deep Cameo specimens at Proof 67 and above are condition-rare but achievable for a patient buyer. Counterfeits of late-1960s clad proofs are essentially nonexistent because the coin returns nothing against production cost, and certification through PCGS, the Professional Coin Grading Service, or NGC, the Numismatic Guaranty Company, is the working standard for any premium-grade buy.

In today's catalog, the 1968-S proof is a first-year-of-type clad proof and the structural anchor of the 1968 to 1998 San Francisco proof run. Most surviving examples grade Proof 65 through Proof 68, with brilliant specimens easy to acquire and Cameo and Deep Cameo strikes carrying genuine premiums above Proof 67. Buyers fall into year-set builders working the modern clad proof run, registry collectors chasing top-pop Deep Cameo strikes, first-year-of-type buyers, and Washington specialists. For the broader story of John Flanagan's design and the series' proof program, see the Washington Quarter series history.