Deck watch by John Arnold & Son, London, c.1790. Outer mahogany deck-box, with Ivory tab signed 'Arnold & Son, London, 112' and broad arrow mark. Later silver case stamped with 112 with maker's initials JJ, and hallmarked for 1838 – 9. Enamel dial signed ‘Arnold & Son, London 112’. Jewelled movement with Earnshaw-type spring detent escapement. Signed on the movement 'John Arnold & Son London No. 112 Invt et Fec' also with broad arrow mark. Presented by the Lords Commissioners of the Admiralty to the Worshipful Company of Clockmakers in 1906. Clockmakers' Museum No. 431.