The product is an antique 1917 Hamilton Railroad Grade 16s pocket watch with a mechanical (manual) movement and 21 jewels. It features a yellow gold GF case with a polished finish, white dial with Arabic numerals, and a lever escapement type. The pocket watch has a unique railroad grade style and a screwback caseback, making it a vintage piece with historical significance. Made in the United States during the early 20th century, this Hamilton pocket watch is a rare and valuable collector’s item. No hairlines/ good crystal/ clean movement/ excellent case/ closures work. WINDS and RUNS – SERVICED. I will resolve any issue quickly and to your satisfaction.