![Bonhams : George Wilkins, Frith Street Soho, London. An 18K gold key wind open face pocket watch with duplex escapement Movement No.1650, Circa 1820 Bonhams : George Wilkins, Frith Street Soho, London. An 18K gold key wind open face pocket watch with duplex escapement Movement No.1650, Circa 1820](https://images1.bonhams.com/image?src=Images/live/2015-10/12/94591835-15-1.jpg)
Bonhams : George Wilkins, Frith Street Soho, London. An 18K gold key wind open face pocket watch with duplex escapement Movement No.1650, Circa 1820
![Bonhams : James Foggo. A very fine extremely rare and very important early 19th century silver cased pocket watch with Double-Wheel Duplex escapementCirca 1805, Believed to be the 4th now recorded Bonhams : James Foggo. A very fine extremely rare and very important early 19th century silver cased pocket watch with Double-Wheel Duplex escapementCirca 1805, Believed to be the 4th now recorded](https://images1.bonhams.com/image?src=Images/live/2013-05/02/94522501-34-1.jpg&height=430&quality=90)
Bonhams : James Foggo. A very fine extremely rare and very important early 19th century silver cased pocket watch with Double-Wheel Duplex escapementCirca 1805, Believed to be the 4th now recorded
![Duplex Pocket Watch in Silver Case by Molyneux and Sons, 1815-1830 | Science Museum Group Collection Duplex Pocket Watch in Silver Case by Molyneux and Sons, 1815-1830 | Science Museum Group Collection](https://coimages.sciencemuseumgroup.org.uk/images/313/265/medium_SMG00024234.jpg)
Duplex Pocket Watch in Silver Case by Molyneux and Sons, 1815-1830 | Science Museum Group Collection
![Victorian 18ct gold open face duplex fusee pocket watch by William Johnson, Strand London, No. 7681, white enamel dial with Roman numerals and subsidiary seconds dial, engine turned case, makers mark - Victorian 18ct gold open face duplex fusee pocket watch by William Johnson, Strand London, No. 7681, white enamel dial with Roman numerals and subsidiary seconds dial, engine turned case, makers mark -](https://www.davidduggleby.com/files/images/auctions/GUID/d65afc82-4ffa-4768-8050-de8e3ab10a41.jpg)
Victorian 18ct gold open face duplex fusee pocket watch by William Johnson, Strand London, No. 7681, white enamel dial with Roman numerals and subsidiary seconds dial, engine turned case, makers mark -
![Early and Rare Chinese Duplex Silver Key-Wind Pocket Watch For Sale at 1stDibs | chinese pocket watch, chinese duplex pocket watch, pocket watch key wind Early and Rare Chinese Duplex Silver Key-Wind Pocket Watch For Sale at 1stDibs | chinese pocket watch, chinese duplex pocket watch, pocket watch key wind](https://a.1stdibscdn.com/early-and-rare-chinese-duplex-silver-key-wind-pocket-watch-for-sale/1121189/j_85778221579618377934/8577822_master.jpg)
Early and Rare Chinese Duplex Silver Key-Wind Pocket Watch For Sale at 1stDibs | chinese pocket watch, chinese duplex pocket watch, pocket watch key wind
![A unique Breguet quarter repeater pocket watch. Duplex movement. Marked with number 1795 and 4384. Case number 2958. - Bukowskis A unique Breguet quarter repeater pocket watch. Duplex movement. Marked with number 1795 and 4384. Case number 2958. - Bukowskis](https://d2mpxrrcad19ou.cloudfront.net/item_images/533841/9085526_fullsize.jpg)