[Minnesota to Denver City, Third Inbound Contract Trip], cover with 3c dull red (#26) used from Stillwater, Minnesota to Denver, carried in the third contract mail to Denver, which was carried by the COC&PP and arrived on August 29th, "Denver City K.T. Aug 29 1860" tombstone postmark atypically used as an arrival marking, some light staining

(MWE Figure 12-22), ex Bauer and Walske (Image)