Denver City, K.T., Aug 22, 1860 "Tombstone" Postmark, clear strike of san-serif date stamp (first type) on incoming cover addressed to "Denver City, Pikes Peak", franked with 1857, 3¢ dull red tied by Minnesota cds; cover with a few trivial spots, otherwise Very Fine, a rare and unusual usage of the Denver City tombstone date stamp used as a receiving postmark. Estimate  $500 - 750. $0 (Image)