Crystal oval shaped watch by A. Senebier, Geneva c.1630, with a protective outer case covered in shark-skin, and a ribbon with an enamel miniature of Charles I attached. On the reverse of the portrait, between a skull and a crown, is the enscription ‘C.R. Jan. 30. 1648’. Also attached to the ribbon is a lock of hair contained inside a crystal locket, and a gold charm in the shape of a lyre.

The faceted crystal of the watch case is set in an engraved gilt-metal rim. The gilt dial is engraved with flowers, with the chapter ring applied as a silver disc, with an engraved lake scene in the centre. The fusee movement has a verge escapement, a train of three wheels and ratchet wheel set-up. The balance cock was originally pinned-on. Purchased by the Worshipful Company of Clockmakers for their museum in 1892.

The enamel portrait is generally thought to be of Charles I, backed up by the initials C.R. on the reverse. The accompanying date suggests that of his execution, although it is incorrect by one year. Hair within the locket is reputed to be that of the King’s, although this claim has never been substanciated. Clockmakers Museum No. 18