Original eight day clock by Harrison, date 1715, wheel work mostly of wood, weight driven Weight driven pendulum clock 1715
Small stone scarab pierced longitudinally with flat base engraved with design of standing harpist and seated figure 2000-1000
Pendulum clock designed by Galileo in 1642 and made by his son in 1649, model. 1642-1649 (original); 1883 (model)