The Illinois Pocket Watch 18s 15 Jewels with Display Back Case is a vintage timepiece featuring Roman numerals on a white dial This mechanical (manual) pocket watch has a lever escapement type making it a unique and collectible piece for watch enthusiasts. Crafted with a polished silver case finish, this Illinois pocket watch showcases the classic design and craftsmanship of the early 20th century, with a screw display back for added functionality and display.