This is a fusee movement, a key-wound system used in high-quality watches from the 1700s to mid-1800s. The balance bridge has intricate engravings, which were common in English watches from the late 18th to early 19th century. The slow/fast index regulator and blued screws indicate craftsmanship from the Georgian or early Victorian era. This antique sterling silver pocket watch is a timeless piece of horological history. Featuring a classic white enamel dial with black Roman numerals and a small seconds subdial, this elegant timepiece showcases traditional craftsmanship. The silver case is adorned with an intricate guilloche pattern and a central shield motif, adding to its vintage charm. The bow and crown bear hallmarks. With its key-wind or stem-wind mechanical movement, this pocket watch is a beautiful addition to any collection. While it shows signs of age and patina, it remains a remarkable artifact from a bygone era.