Ships Masthead Lamp

This is a large vintage ship's Masthead dual light and has four brass labels 1. MASTERHEAD 2. LAMPAUS 639 3. MAKERS MARK but now too worn to read. 4. PATENT No 546575 AND OTHERS PENDING and on both lenses M.W.S.L.C 12( ) is engraved. This is in original condition with a few dents and a tiny chip on the lense and approximately 14kg.