The front plate measures 6 wide. The movement is marked Chelsea Clock Co Boston 477045.The item "VINTAGE CHELSEA CLOCK CO BOSTON US NAVY BOAT SHIPS CLOCK MOVEMENT PARTS" is in sale since Wednesday, June 16, 2021. This item is in the category "Collectibles\Decorative Collectibles\Clocks\Replacement Parts & Tools". The seller is "midwestestate" and is located in Chicago, Illinois. This item can be shipped worldwide.