A mid 19th Century English duplex by Nicole Nielsen in a gold half hunter case. Gilt three quarter plate keyless movement with Nicole’s patent winding. Engraved cock with polished steel regulator, compensation balance with blue steel overcoil hairspring. Duplex escapement, brass escape wheel, jewelled locking roller and pivots with endstones. Signed white enamel dial, Roman numerals, blue steel half hunter hands. Engine turned 18 carat full hunter case, engine turned middle. Unusual gold clip retaining the front hunter cover, small engraved monogram to the central circular cartouche. Clip on back, maker’s mark “AN” in an oval and number corresponding to that on the movement. Unusual gold winding crown and bow.