1893 Mexico Lg Numeral Covers

5665- 1893, OPOCER, SONORA TO LONDON, VIA NEW YORK, VERY SCARCE

5677- 1887, MAZATLAN, SINALOA TO SAN IGNACIO

5654- 1890, REGISTERED FROM TOLUCA TO MEXICO, 20¢ RED AND 25¢ VIOLET-FRONT, UNUSUAL

5721- NO DATE, .40¢ POSTAGE (6) STAMPS, ETLA SEALS (2) 2 BLACK OFFICIAL SEALS. CREASES, FRONT

5672- 1894, RAIL ROAD NUMERAL CANCEL “7” SAN LUIS POTOSI TO PENSILVANIA, WITH BACK STAMPS