Hamilton GCT 4992B Pocket Watch. Case diameter is close to 52mm. Its keeping good time (within 30 seconds a day).The watch will keep running for over 48 hours after its fully wound. The item "Hamilton GCT 4992B Pocket Watch" is in sale since Sunday, October 20, 2019. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Pocket Watches\Antique". The seller is "tinhguys" and is located in Lawrence, Kansas. This item can be shipped to United States.