Mexico, 1864-66, ½r lilac (Guadalajara), two pairs, cons 24-1865 with cons 23-1865 error on right stamp in first pair, Zapotlan overprint, all sub. 23, tied by Franco en Zapotlan two-line postmarks (Schatzkes 441) on cover to Guadalajara, Very Fine, a rare multiple usage of the ½r Eagle issue. Scott Nos. 20  Estimate $1,500 - 2,000. $0 (Image)