2006-D South Dakota

Denver's 2006 South Dakota quarter carries John Mercanti's "Great Faces. Great Places." reverse: the Mount Rushmore National Memorial sculpture across the upper register, a ring-necked pheasant rising across the lower field, and wheat stalks framing the design at the left. South Dakota's November 6, 2006 release closed the year-8 program as the fifth and final 2006 issue. Denver struck 265,800,000 pieces, outpacing Philadelphia's 245 million on the same design and rounding out the year-8 Denver totals. Mercanti served as the twelfth Chief Engraver of the United States Mint from 2006 to 2010, and the South Dakota reverse is one of the higher-profile state designs credited to him within that role.

Strikes on Denver South Dakotas come up cleanly defined more often than not, with the four presidential portraits on the Rushmore sculpture and the pheasant's wing feather detail serving as the natural detail registers. Weak strikes show up first as softness along the pheasant's long tail feathers and along the wheat-stalk seed heads, where the relief sits deepest. Washington's cheek and hair-above-ear remain the obverse weak points for grading, and 2006-D bag handling typically caps many candidates at MS66. PCGS and NGC populations run deep at MS66, narrower at MS67, and meaningfully scarce at MS68 in the population reports kept by the two major third-party grading services (TPGs). No FS-listed varieties anchor to the issue.

The 2006-D South Dakota closes the year-8 calendar lineup and reads as the readily available standard for the Rushmore design. The coin works well in topical sets organized around national memorials, state birds, agricultural grains, or the Dakotas-statehood-day pair (November 2, 1889). Roll searchers continue to pull premium strikes for full-detail gems, and MS67 examples remain available for collectors completing a top-grade run on a working budget. The design pairs naturally with the North Dakota bison reverse in Dakotas-pair subsets. For wider context, see the 50 State Quarters series history.