Lot 36: John Barwise, London, Movement No. 9472, Case No. 9472, 53 mm, 114 g, circa 1889Platinum House
November 10, 2012
Frankurt, GermanyLive Auction
Description: A rare pocket chronometer with duplex escapement and unusual calibre Case: silver, polished, case maker's punch mark "JW" (Joseph Walton), London date letter for 1889. Dial: enamel, radial Roman hours, auxiliary seconds, gold Breguet hands. Movm.: frosted, gilt chain/fusee, duplex escapement, screw compensation balance, blued balance spring, chatoned diamond endstone on balance. John Barwise (1757-1842) Barwise was one of London's most renowned makers of precision watches and one of the few watchmakers who served as an expert on the Board of Longitude during the chronometer dispute between John Arnold and Thomas Earnshaw.