2015-S Silver Proof

The 2015-S Roosevelt dime proof came out of San Francisco at 387,310 pieces, a 21 percent pullback from the 491,157 2014-S silver figure and the lowest standard silver-proof Roosevelt mintage of the modern program era. The 2015 silver proof set carried the silver-content America the Beautiful Quarters sixth-year five-coin set and the dime, all using the same 90 percent silver, 10 percent copper alloy that had governed dime composition from 1837 through 1964. The 2015-S silver proof is the standard annual issue and runs parallel to the special-distribution 2015-P Silver Reverse Proof and 2015-W Silver Proof in the March of Dimes Special Silver Set, which carry different mintmarks, finishes, and distribution channels. The S mintmark sat sharp above the date, dies were hand-polished to mirror finish on the slower-press protocol identical to the clad-proof workflow, and the silver planchet produced the characteristic white-silver surface tone.

Authentication on a 2015-S silver proof rests primarily on the composition diagnostics. Weight on a calibrated scale must read 2.50 grams against the clad 2.268 grams; this single best non-destructive test reliably separates silver from clad proof issues at the same date. Surface tone should show the bright white-silver appearance of 90 percent silver, and edge view should display the solid silver-color profile rather than the dark copper-core sandwich of the clad. The S mintmark must show sharp serifs above the date under 10x magnification, the W and P mintmarks on the March of Dimes companions are distinct and are the first authentication separator from the regular silver proof issue. PCGS and NGC labels designate the issue as "Silver" and the Cameo and Deep Cameo certifications carry the routine PR69 DCAM and PR70 DCAM premium structure.

The 2015-S silver proof sits at the bottom of the modern silver-proof Roosevelt range, with the 387,310 figure marking the lowest standard silver-proof mintage in the 1992-2018 program. PR69 DCAM is available at the standard silver-proof price level and PR70 DCAM forms the condition-rarity step where PCGS and NGC populations thin to registry-relevant levels. The 2015-S silver proof is required for any modern silver-proof Roosevelt date set and carries a meaningful premium relative to the higher-mintage silver proofs of the mid-2000s. For the modern San Francisco silver-proof era and the 2015 program low, see the Roosevelt Dime series history.