Mexico, 1868, 12c black on green, Tlaxcala, perf'd, cons 40-68, tied on folded letter sheet by boxed S.A. Chautemapam postmark (Schatzkes 1657), to Puebla, receiving backstamp, Very Fine, one of the most difficult districts of the '68 issue. Scott No. 53  Estimate $150 - 200. $0 (Image)