WF 6, 1885 12c Green Hidalgo envelope, 25c Frank, addressed to San Francisco, California, purple oval June 6, 1886 Hermosillo company handstamp, endorsed "Waybilled Vc 25.00" and with orange "Express Wells, Fargo y Cia. de Hermosillo, Mexo." label at left, vertical crease, light toning and small backflap faults, fine and rare