Nevada Copper MC stock datelined San Francisco, issued June 16, 1864 for 50 shares to HN Squire Jr and signed by James Kellogg as president. Valentine & Co. print, SF. Grass Valley Township, Nevada County printed on the masthead. Copper mining in the Grass Valley area was sparse, with most "copper mines" just prospects. An exception at the time was the Last Chance mine, which was the only producing copper mine there at the time, located near the Empire mine. The ore ran $35/ton. VF. Uncanceled.