1727 This watch displays two innovations. Firstly, it has a white-enamel dial. These came to replace the earlier metal dials and were much easier to read. Secondly the watch has a cylinder escapement, Graham's own invention to improve timekeeping. The outer case depicts Apollo. George Graham, London Fusee, cylinder escapement, balance with spring, quarter repeating (P&E 1912.1107.1)
aperture=f4.5 focal length: 60.0 mm exposure 1/200 sec ISO: 3200