Worked for the first 6 hours then stopped. It was restarted and has been ticking strongly for 4 hours. There’s obviously a small problem, so will need a service or repair to sort this issue out and is sold as is. The large gold plated case is 54.2mm in diameter. 1908 Hamilton, Grade 940, Model 1, 21J, 18S, lever set, stem wind, railroad grade, 5 adjusts with date serial number 589061. The dial has a very tiny loss at the edge where the lever is. A stunning pocket watch.