Traveling clock watch with alarm

Maker: Watchmaker: Thomas Tompion (British, 1639–1713)

Maker: Case and dial maker: Nathanial Delander (British, 1648–ca. 1691)

Date: ca. 1680

Culture: British, London

Medium: Case and dial: silver; Movement: gilded brass, partly blued steel, and silver

Dimensions: Overall (case): 5 3/4 × 4 × 2 in. (14.6 × 10.2 × 5.1 cm); Diameter (back plate): 3 1/4 in. (8.3 cm)

Classification: Horology

Credit Line: Gift of J. Pierpont Morgan, 1917

Accession Number: 17.190.1512


This movement represents an early but short-lived experiment with the newly invented balance spring in which the fusee was omitted. The hair-thin spiral spring is attached to the balance, which is held in place by the delicately engraved and pierced cock. There are separate going, striking, and alarm trains. Delander was one of Tompion’s favored casemakers.