Currently working and was tested over an 18 hour period and gained 30 seconds to 1 minute. It will need a service or repair to keep time and is sold as is. The gold plated case is 50.9mm in diameter. 1917 Hamilton, Grade 974, Model 2, 17J, 16S, stem set, stem wind with date serial number 1248507. Case back will need adjusting, doesn’t snap shut. Dial has some very faint cracks. Good case but it is worn and has some scratches.