Description: Hollow-back (no brass-edge), three-quarter plate, going-barrel movement (42mm diameter) with engraved escape, lever and balance cocks, the keyless winding and hand setting mechanism mounted under the dial. Unusual form of straight line detached lever escapement. Gold balance with poising screws, spiral balance-spring. (A)
Additional Info:
John Sanders; winding, setting and stop patent, 1860
John Sanders ‘watch maker’ 15 West Bar, Sheffield, Patent 450, February 1860, includes keyless winding, keyless hand setting and a stop mechanism operated through the bow, which this movement may have once had – the patent drawing is fairly clear. Sanders was an exhibitor at the London 1862 International Exhibition, showing clocks, keyless watches and a regulator. This watch, numbered 3, may well have been part of those shown. (A)
Antiquarian Horology 
