Mountain City K.T., Sept. 22, 1860 manuscript postmark on uncanceled 1853, 3¢ Nesbitt entire addressed to Kensington, Conn., indicia showing second albino impression; cover with slight rough opening at right, otherwise Very Fine. Estimate  $750 - 1,000. This mining camp was established in Gregory Diggings in 1859. The post office opened January 17, 1860. $0 (Image)