1891 Mexico Lg Numeral Covers

5660- 1893, MANZANILLO VIA GUAYMAS TO SAN FRANCISCO, CA

5676- 1893, FORMULA CARD FC21, BARRANCA DE ORO DE TAMAULIPAS

5656- 1889, REGISTERED LETTER FROM TOLIMAN TO MEXICO, WITH GREEN CANCELS, A VERY RARE POSTMARK, WITH A 10¢ AND 25¢ STAMP, FRONT

5655- 1888, LETTER FROM CHALCHIHUITES TO DURANGO, 1¢

5658- 1891, CERTIFIED FROM CUAUTITLAN TO FERROCARRIL CENTRAL “ESTACION DE BUENA VISTA.” BEAUTIFUL ENVELOPE