1917 Mexico Revolutionary Covers

5835- 1914, #359 BISECT, FROM GUAYMAS TO NOGALES, W/BACKSTAMP

5845- 1915, 1¢ PC, W/10¢ BARREL – A MESS!

5842- 1910, 1¢ PC, W/INVERTED 10¢ BARREL

5847- 1915, ADVERTISING ENVELOPE W/#502-503

5848- 1915, #511 TO MEXICO, WITH OFFICIAL MINATITAN PURPLE SEAL, NICE AND CLEAN