2006-S Nebraska, Silver Proof

2026-02-27, The 2006-S Nebraska Silver Proof was struck at San Francisco to a mintage of 1,054,008, distributed exclusively through the year's Silver Proof Set. Charles Vickers' reverse renders an emigrant covered wagon pulled by a team of oxen across the open plain, with Chimney Rock, the most famous of the Oregon Trail landmarks, rising as a slender sandstone spire in the right field. The sun sets behind the formation, sending rays across the western sky. The inscription "Chimney Rock" anchors the scene. On a 90% silver planchet, the wagon's bowed canvas and the eroded vertical fluting of the rock spire both read with a fine-line precision the clad strike cannot replicate, the bright white metal giving the trail subject a quiet luminosity against the deeply mirrored sky field.

Authentication of a genuine 2006-S Nebraska Silver Proof begins at the scale. A silver example weighs 6.25 grams; the clad proof weighs 5.67 grams. That 0.58-gram difference is the most efficient diagnostic available and rules out altered or counterfeit pieces with a single measurement. The 90% silver, 10% copper alloy produces a silvery-white reflective surface that contrasts visibly with the slightly grayer cast of copper-nickel clad, and viewing the 24.3mm edge straight on reveals a solid silver color rather than the copper-cored sandwich stripe characteristic of clad coinage. Squared, sharp rims and heavily frosted Cameo or Deep Cameo devices set against deeply mirrored fields provide the final visual confirmation. The canvas folds on the wagon cover and the vertical erosion lines of Chimney Rock should display heavy frost under angled light.

None of the 2006 Nebraska silver proofs entered circulation; all were sold in collector packaging, and survival rates remain very high in pristine grades. Modern market value reflects both the silver content and the proof finish, with Deep Cameo and PR70 examples carrying the strongest premiums. The Chimney Rock subject draws topical interest from Westward Expansion and Oregon Trail collectors, who pair the Nebraska issue with later trail-themed designs such as the 2007 Wyoming bucking horse and the 2008 Oklahoma scissor-tailed flycatcher for an unusually coherent run of frontier imagery on the silver tier. For more on the program that turned the quarter into a fifty-state design canvas, see the 50 State Quarters series history.