2007-P Wyoming, Satin Finish Proof

Wyoming's statehood quarter entered circulation on September 4, 2007, the fourth of five Western designs released that year and the most recognizable silhouette in the program, the Bucking Horse and Rider, the state's officially registered trademark since 1936. The 2007-P Wyoming Satin Finish Proof was struck at the Philadelphia Mint for the U.S. Mint's Annual Uncirculated Coin Set, the satin format's third production year. Norman E. Nemeth's reverse renders the bucking horse in mid-jump with rider arched back at the saddle and arm raised, the state motto "The Equality State" arched above and the statehood year "1890" anchoring the design below. Nemeth's silhouette treatment, simplified from the original Wyoming license-plate emblem, translates exceptionally well under satin striking, the matte surface picks up the horse's muscle lines and the rider's hat brim without the highlight glare a mirror finish would impose. Annual mintage settled at 895,628 pieces per mint for the 2007 set, the standard per-state allocation.

Authentication runs through surface character first. Genuine satin examples show a uniform matte sheen across both the horse and the open fields, the result of acid-etched or sandblasted dies rather than the polished-and-frosted dies used at San Francisco. There is no rotating cartwheel luster of the kind that travels across a Philadelphia roll quarter when tilted under a light, and no cameo contrast at the rider's silhouette. Composition is standard cupronickel-clad, 91.67% copper / 8.33% nickel by total weight, with the outer cladding running 75/25 over a pure copper core, at 5.67 grams and 24.3 millimeters, matching circulation production exactly. The P mintmark sits above Washington's queue on the obverse; no S satin variants exist, since San Francisco struck only mirrored proofs in this era. PCGS and NGC slab these as SP (Specimen) or SMS rather than PR.

Because the coin shipped only inside Mint Set packaging, the original surface generally survives intact on examples recovered from sealed sets, and most certified pieces land in the SP67 to SP69 band with SP70s common enough to keep top-pop premiums modest. Nemeth's bucking-horse design closed out his statehood contributions; for the broader designer roster across 2007, see the 50 State Quarters series history.