Messenkope's Union Square Post Office, 1849 (1¢) black on green. Minor enamel loss in upper left margin, manuscript canceled through "Messenkopes" (usage during Dunham's ownership) on illustrated Dr. Shew's New-York Water-Cure Institution corner card cover to Cohoes, N.Y., red "New York, 5cts, May 27" integral rate cds, with original enclosure, Very Fine; with 2009 P.F. certificate. Scott No. 106L1  Estimate $200 - 300. $0 (Image)