Chelsea Clock Co. 12" Marine Clock for Fore River Shipbuilding, Quincy, Mass. This clock is very unusual in many ways. First, the dial is artfully engraved "Fore River Shipbuilding, Quincy, Mass". Second, the case is polished aluminum. This is the only 12" Chelsea known with an aluminum case. Third, the back of the case is embossed with the logo of "Bethlehem Shipbuilding Corporation, Ltd., Fore River Plant, EA 430". It is exceedlingly rare to find a marine clock that is so clearly marked on both the case and the dial. The clock is mounted on a custom made mahogany wall mounting ring. The movement and case are stamped with serial number 153529 dating the clock to March 1923. The movement has been serviced and the clock keeps excellent time.