1900 Mexico Official Covers

5956- 1805, .3¢ ON ENVELOPE OPENED ON ALL SIDES, WITH (2) RED CHIUTLA SEALS, TO ATLIXCO, WITH BACK STAMPS, OFFICIAL

1887 #158 (2), TEHUACAN TO TECAMACHALCO, PLUS OFFICIAL BLUE SEAL, FRONT

5977- 1905, .3¢ CHIGNAHUAPAN TO ZACATLAN, WITH A LA TRISTE SEAL, ZACATLAN CANCEL ON BACK, OFFICIAL

5969- 1902, .3¢ ON FRONT, ZACATLAN WITH PURPLE ZACATLAN SEAL, OFFICIAL

5968- 1907, .6¢ ON FRONT, SAN JUAN DE LOS LLANOS TO CUYUACA, WITH RED SEAL, OFFICIAL