Super rare movement, only 10,000 made in 1940 making it highly collectable, even more so in a 14ct gold case ! Working and was tested over an 18 hour & gained approx 30 seconds. It will need a service or repair to keep perfect time. The 14ct slim line gold case is 45mm in diameter and weighs approx 47.6 grams. 1940 Waltham Premier, Grade 223, Model 1924, 21J, Colonial size, stem set, stem wind, adjusted with date serial number 30601558. Dial has some minor spotting, case back has some dents and general wear.