Central Overland California & Pike's Peak Express Company, Denver City, K.T., Oct 11, oval date stamp on cover addressed to St. Joseph, Mo. and endorsed "per C.O.C. & P.P. Exp. Co." at bottom left, with additional "Central Overland California & Pike's Peak Express Company, St. Joseph, Mo., Oct 17" receiving date stamp, placed in the mails with target handstamp canceling 1857, 3¢ dull red; stamp corner flaw and cover with partial backflap, otherwise Very Fine, a very rare usage showing both the origin and receiving express handstamps on front. Estimate  $500 - 750. $0 (Image)