1958 Proof

The 1958 proof Washington quarter was struck at Philadelphia to a recorded mintage of 875,652 pieces, the lowest figure of the 1958 to 1964 silver proof run and a sharp drop from the 1,247,952 of 1957. The reason was a contracted proof set: the Mint had sold proofs only by collector subscription and the 1958 demand simply lagged its neighbors before climbing back above one million the following year. The figure reads small only by 1960s standards. By 1936 to 1942 measurement, 875,652 pieces is a flood. The coin carries John Flanagan's portrait of Washington on the obverse with the JF initials at the truncation of the neck, the heraldic eagle reverse, and no mintmark, since proof production stayed at Philadelphia throughout the silver era. Composition is 90% silver and 10% copper at 6.25 grams, with .1808 troy ounces of silver in each piece.

Authentication on this issue runs through the brilliant proof finish first: mirrored fields, crisp square-edged devices, and the squared rim that separates a proof from a well-struck business strike. The weight test settles compositional questions in seconds, since any same-design clad piece would register 5.67 grams against the proof's 6.25. By 1958 the Mint had begun chasing cameo contrast on a portion of the proof dies, so Cameo, the strong contrast between mirrored fields and frosted devices, occurs at a meaningful rate, and Deep Cameo specimens at Proof 67 and above are condition-rare but available with patience. Counterfeits of late-1950s silver proofs are uncommon because reproducing convincing mirror fields and the silver flow lines costs more than the coin returns, 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 the modern collecting landscape, the 1958 proof functions as the low-mintage anchor of the 1958 to 1964 silver proof short set, and pricing reflects that. Most surviving examples grade Proof 64 through Proof 67, with brilliant Proof 67s readily traded and Cameo or Deep Cameo specimens at Proof 67 and above stepping into a separate tier. Buyers cluster into year-set builders pulling together the silver-era run, registry collectors chasing top-pop Deep Cameo strikes, and Washington specialists. For the broader story of John Flanagan's design and the series' proof program, see the Washington Quarter series history.