Mexico, 1856, 2r yellow green, Zacatecas, manuscript district overprint, on a front to Guadalajara tied by Aguascalientes boxed date stamp (Schatzkes 1928), Very Fine, manuscript overprints were used for a few weeks when the post master fled Zacatecas due to the war and carried with him the stamps to Aguascalientes, but not the mechanical overprint. Scott Nos. 3  Estimate $250 - 350. $0 (Image)