WWII 1942 US Navy Chelsea Mark 1 Boat Clock w/ Key – Runs Well & Clean WW2 USN. Item is in incredible condition. Will not find one like it easily. Runs and comes with key. If you have any questions, feel free to ask! The item “WWII 1942 US Navy Chelsea Mark 1 Boat Clock with Key Runs Well & Clean WW2 USN” is in sale since Monday, April 9, 2018. This item is in the category “Collectibles\Militaria\WW II (1939-45)\Original Period Items\United States\Field Gear, Equipment”. The seller is “steviewonder2002″ and is located in Santa Rosa, California. This item can be shipped worldwide.