Mexico 1868, 50c black on yellow, half used as 25c, Durango. Left half of vertical bisect showing district overprint, tied by clear straight line Penon Blanco handstamp (Schatzkes 283) on 1872 folded letter sheet to Durango paying the 25c rate for distance greater than 75 leagues; horizontal file fold affecting stamp, otherwise Very Fine, an extremely rare bisect usage from Penon Blanco; signed J. Bash. Scott No. 62c  Estimate $1,500 - 2,000. $0 (Image)

Mexico 1868, 50c black on yellow, half used as 25c, Durango. Left half of vertical bisect showing district overprint, tied by clear Cuencame circular handstamp (Schatzkes 250) on fresh 1872 folded letter sheet to Durango, Very Fine and choice, the 25c rate representing the rate for a distance greater than 75 leagues; with 1995 MEPSI certificate, signed J. Bash. Scott No. 62c  Estimate $1,000 - 1,500. $0 (Image)