[Denver City Tombstone Postmark, Aug 23 1860, Temporary Contract Period] and matching cancel tying 3c dull red to cover to Ohio docketed as having enclosed a August 16, 1860 letter from the Nevada City mines, "Hinckley & Co.’s Express Denver City August 23," manuscript "8" (cents) express rate for carriage to Denver carried by the COC&PP to St. Joseph under a temporary U.S. mail contract, postmarked type in use only at end of August

(MWE Figure 12-21), ex Bauer and Walske (Image)