An early 18th Century English cylinder by George Graham in contemporary gilt and leather pair cases. Full plate fire gilt movement with Egyptian pillars, signed gilt dust cover. Pierced and engraved cock with diamond endstone, solid engraved foot and plate for the silver regulator disc. Fusee and chain with worm and wheel barrel setup between the plates. Plain three arm steel balance, blue steel spiral hairspring. Polished steel cylinder, large brass escape wheel. Winding through the white enamel dial, Roman and Arabic numerals, gold beetle and poker hands. Contemporary gilt inner case. Gilt outer case covered in green leather, decorated with gilt pique pins.
One of the earliest examples of a cylinder escapement. Watches numbered after 5180 all have cylinder escapements. Before 1727 all were verge