Lot
618 
Tubac (Arizona Territory), straight line postmark (Meyers type 2) on 1¢ postal card to Tucson, A.T., reverse with interesting 1882 message "Please call at P.A. & Co. stage office and receive $4.00." referring to the Pedro Aguirre & Co. stage and express office, Very Fine. Estimate $500 - 750.
THE ONLY RECORDED EXAMPLE OF THE TUBAC, ARIZONA TERRITORY STRAIGHTLINE POSTMARK.
Pedro Aguirre & Co. operated stages and mail service from their headquarters in Tucson, Arizona to points south in Southern Arizona and Sonora, Mexico, as early as 1870.