2012-S Acadia, Silver Proof

Barbara Fox's reverse for the 2012-S Acadia Silver Proof renders Bass Harbor Head Light, the small white-and-red lighthouse perched on the granite ledge at the southwestern tip of Mount Desert Island. The issue is the third of the 2012 silver proof slate, struck at San Francisco on a 90% silver, 10% copper planchet at 6.25 grams under the .900 fine standard. The Mint reported 509,637 silver proof sets sold for 2012, the production anchor for every silver entry that year. The Acadia reverse is the first lighthouse on an ATB silver proof, a subject the program returns to with the 2013 Fort McHenry design (which depicts the fort rather than its own lighthouse) and remains a single example within the 56-design run.

Authentication on the issue begins with weight: 6.25 grams for silver against 5.67 grams for clad, the half-gram spread any precision scale resolves cleanly. The reeded edge reads solid silver across the perimeter without the reddish copper-core line a clad strike shows at an angle. PCGS, the Professional Coin Grading Service, and NGC, the Numismatic Guaranty Company, label silver entries with Silver or the S/Ag abbreviation on the slab insert alongside the proof designation. Cameo (CAM) and Deep Cameo (DCAM) are the two contrast tiers, with DCAM the standard outcome on modern silver proofs because the working dies receive a chemical frost before each press run. The fine textured rendering of the granite ledge and the shadow under the lighthouse keeper's quarters are the strike grading diagnostic points; soft strikes leave the architectural fenestration flat against the field.

The collector market positions the issue at the upper end of the 2012 silver slate for single-design demand because the Bass Harbor lighthouse is widely recognized as one of the best-photographed New England landmarks. PR69-DCAM examples trade for a modest premium over the 0.1808 ounce silver-weight value, and PR70-DCAM examples sit a tier above with the registry-driven spread slightly above the year's average. The Acadia reverse is one of the better-regarded 2012 designs aesthetically and tends to outsell its four sister issues when individual silver proofs move on the auction floor. For the broader story of the ATB Silver Proof program and the series' production arc, see the Washington ATB series history.