The 1864–1964 Nevada Centennial Half Dollar (commemorative silver) values depend on grade:
Key Specs: 90% Ag, 10% Cu; 12.5g; 30.6mm; designed by Franklin & Barber; minted at San Francisco (S mintmark).
Value Drivers: Luster, strike quality, toning (original rainbow toning premium), certification (PCGS/NGC). Cleaned/damaged coins trade at bullion (~$10–$12 silver melt).
Check PCGS Price Guide or NGC Coin Explorer for current certified populations and auction records.