41.6 mm with one applied marker missing... Diameter at the movement side: 36.9 mm Good Luck. The item "Pocket Watch Movement 10s 12s Hamilton 945 23 jewels 5 adj.Dial Buick Logo" is in sale since Thursday, August 15, 2019. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Parts, Tools & Guides\Parts\Other Watch Parts".antictac" and is located in Miami, Florida. This item can be shipped worldwide.