A novelty desk clock in the form of a gilt brass mortar which can be raised and lowered in its coromandel carriage, all on a stepped and shaped base. The barrel engraved with a military trophy including standards, a wheel, cannon and helmet centred on a drum. The clock as a cannonball fitted into in the muzzle with a 2 ¾-in silvered dial, painted Roman chapter ring and 8-day spring barrel movement. Inscribed Thomas Cole, London, no. 1658 , and retailed by London & Ryder. English, circa 1840.