2010-S James Buchanan Proof

San Francisco struck 2,224,613 proof James Buchanan dollars in 2010, distributed through the four-coin 2010 Presidential Dollar Proof Set, the Annual Proof Set, and the Premier Silver Proof Set rather than as individual coins. The figure is in line with the other three 2010 proof Presidential Dollars and reflects the steady contraction of proof set sales as the program aged. Buchanan held the office from 1857 to 1861, the only bachelor president and the only president born in Pennsylvania, and his single term closed with seven southern states already seceded. Phebe Hemphill modeled the obverse portrait, paired with Don Everhart's Statue of Liberty reverse used across every business-strike Presidential Dollar through 2016. Polished planchets and multiple strikes from frosted dies produce the deeply mirrored fields and frosted devices that define the proof finish.

The S mintmark sits on the edge alongside the date and the legends E PLURIBUS UNUM and IN GOD WE TRUST, applied in a separate edge-press strike after the obverse and reverse dies. Cameo, the strong contrast between mirrored fields and frosted raised devices, comes standard on 2010 proofs, and Deep Cameo (DCAM at PCGS, the Professional Coin Grading Service, or Ultra Cameo at NGC, the Numismatic Guaranty Company) is the routine designation rather than a premium tier. Strike is uniformly sharp on the manganese-brass alloy, and field marks from set handling are the most common drag on grade. Look closely at the high points of Buchanan's hair and Liberty's torch flame for the slight haze or fingerprint disturbance that separates a Proof 69 from a Proof 70.

The 2010-S Buchanan proof is a common, inexpensive issue in PR69 DCAM and a moderate condition rarity in PR70 DCAM, where the population thins relative to the underlying mintage but still measures in the low thousands across both major grading services. Most collectors fill the slot through proof set break-ups at modest premiums above face value rather than buying slabbed singles, and the four-coin 2010 proof set typically trades for a small markup over its constituent face. Registry builders chasing PR70 DCAM examples are the primary single-coin market. For broader program context, see the Presidential Dollar series history.