THIS IS A PAIR OF OLD REAL PHOTO POST CARDS OF A SIOUX CITY IOWA DEALERSHIP. THEY FEATURE THE AUTOMOBILES FOR SALE (WE BELIEVE THEY ARE BUICKS). THE BACKS HAVE THE KODAK DEVELOPERS MARK FROM SIOUX CITY AND ARE DATED 1928. THEY ARE POST CARD SIZE SO WE THINK THAT WAS THEIR PURPOSE……ALTHOUGH THEY MAY HAVE BEEN SOME SORT OF ADVERTISING ?  CHECK OUR PHOTO’S FOR DETAILS ON THESE EARLY AUTOMOBILE PICTURES