ANTIQUE DRIVING SAFETY GLASSES DATED 10-2-1917. Marked "SAFETY EQUIPMENT SERVICES CO. ADJUSTOGLAS PAT. 10-2-17" GOOD CONDITION FOR OVER 100 YEARS OLD. I HAVE BEEN TOLD THESE WERE MADE FOR DRIVING EARLY AUTOMOBILES, MOTORCYCLES AND EVEN TRAINS. THEY HAVE THE METAL MESH FOLDING SIDE PROTECTION PLATES.