2013-S White Mountain, Silver Proof

San Francisco struck 467,961 pieces of the 2013-S White Mountain silver proof for the year's Silver Proof Set, the figure matching the U.S. Mint's reported Silver Proof Set sales for 2013. The coin opened the third year of the ATB silver-proof slate at a level that stabilized the late 2012 sales rebound, settling Silver Proof Set demand into the high-460-thousand band where it would remain through 2015. Phebe Hemphill's reverse renders Mount Chocorua across the surface of Chocorua Lake in central New Hampshire, with the summit dominating the upper field and the reflected silhouette filling the lower water plane. The silver composition (90% Ag / 10% Cu, .1808 troy ounces of pure silver, 6.25 grams total weight, 24.26-millimeter diameter, reeded edge) is the same alloy the Mint used for Silver Proof quarters from 1992 through 2018.

Authentication on the coin runs through three checks. The 6.25-gram weight versus the 5.67-gram clad equivalent is the cleanest separator, since a calibrated jeweler's scale resolves the eighth of a gram comfortably; the silver coin's edge also reads as a uniform silver-gray reeded band rather than the copper-core sandwich visible on a clad proof. PCGS and NGC apply a "Silver" attribution to the slab label on top of the numeric grade and Cameo or Deep Cameo contrast designation, where Cameo (CAM) is moderate frosted-device contrast and Deep Cameo (DCAM) is the higher-contrast tier. Grade distribution clusters at PR69-DCAM and PR70-DCAM with population counts in the thousands at the top tier. The lake-surface reflection is the design-specific diagnostic, since properly struck examples preserve clean separation between the textured mountain face and the inverted reflection while underdone strikes flatten the two planes together.

The coin sits at the bottom of the modern silver-proof market and trades at a small premium over melt plus a slab fee. Realized prices for PR69-DCAM and PR70-DCAM examples track the silver spot moves more than collector demand, and the issue routes through Silver Proof Set assembly and ATB-design-set assembly rather than standalone pursuit. The 467,961 print run sits comfortably below the 1.23 million 2013 clad-proof figure, which gives the silver version a 2.6-to-1 scarcity ratio against its clad sibling, though the broader 1.18-million 2013 Silver Proof Set demand floor keeps the issue from genuine scarcity. For the broader story of the ATB Silver Proof program and the series' production arc, see the Washington ATB series history.