1973-S Proof

The 1973-S proof Washington quarter was struck at San Francisco to a recorded mintage of 2,760,339 pieces, a step down from 1972-S's 3,260,996 figure as proof set demand eased in advance of the Bicentennial buildup that would lift 1975 and 1976 sales. The 1973-S proof set was a standard five-coin offering with no major design changes from the 1972 issue, and the quarter denomination tracked the cent, nickel, dime, half dollar, and Eisenhower dollar at identical proof-set sales counts. 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. The reverse retains the heraldic eagle. Composition is 75% copper and 25% nickel clad over a pure copper core, at 5.67 grams.

Authentication runs through the brilliant proof finish: deeply mirrored fields, crisp square-edged devices, and the squared rim that separates a proof from a well-struck business strike. A weight test at 5.67 grams distinguishes the clad proof from any 90% silver same-design piece at 6.25 grams. The S mintmark sits on the obverse and was hand-punched into working dies through 1973, with no major catalogued mintmark varieties for the date. Cameo, the strong contrast between mirrored fields and frosted devices, occurs on the majority of 1973-S proof dies as the Mint's frosting practice had matured by this point in the run, and Deep Cameo specimens at Proof 67 and above are readily available in graded inventory. Proof 69 Deep Cameo strikes appear in meaningful population counts. 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 1973-S proof is a common date in the early clad-proof run, with raw and certified supply readily available through Proof 68 and Cameo and Deep Cameo strikes available at modest premiums up to Proof 69. Pricing sharpens at Proof 70 Deep Cameo, where the population thins meaningfully and registry-level competition emerges. Buyers cluster into year-set builders working the modern clad-proof run, registry collectors chasing top-pop Deep Cameo strikes, and Washington specialists pulling the complete San Francisco proof run together. For the broader story of John Flanagan's design and the series' proof program, see the Washington Quarter series history.