Mexico, 1868, 50c black on yellow, half used as 25c, Durango, imperf, left half of stamp tied by Cuencame circular handstamp (Schatzkes 250) on fresh 1872 folded letter sheet to Durango, Extremely Fine, a choice bisect usage from Cuencame; with 1995 P.F. certificate. Scott Nos. 62c  Estimate $1,500 - 2,000. $0 (Image)