Joseph White & Son. An unusual silver and gold openface keyless lever watch with 6 minutes flying tourbillon

SIGNED JOSEPH WHITE & SON, COVENTRY & LONDON, MAKERS TO THE ADMIRALTY, NO. 38713, RETAILED BY D. NORRIS, UNICO AGENTA PARA BRAZIL, STAMPED WITH LONDON DATE LETTER FOR 1908

Details

Joseph White & Son. An unusual silver and gold openface keyless lever watch with 6 minutes flying tourbillon
Signed Joseph White & Son, Coventry & London, Makers to the Admiralty, No. 38713, retailed by D. Norris, Unico Agenta para Brazil, stamped with London date letter for 1908
With three quarter plate gilt-finished jewelled lever movement, screwed gold chatons, blued screws, gilt flying tourbillon carriage, bimetallic compensation balance with gold poising screws, free sprung regulator with diamond endstone, silver cuvette, the white enamel dial with Roman numerals, blued steel spade hands, subsidiary seconds, in circular case, gold crown, case stamped W.B for William Bullock, numbered 38713 and stamped with London date letter for 1908, dial signed, movement signed by maker and retailer and numbered
59 mm. diam.

Lot Essay

The flying tourbillon is a variation of the tourbillon invented by Abraham-Louis Breguet. It has the same single driving force of a tourbillon but rather than being supported by a bridge or cock at both top and bottom, it is cantilevered, being only supported from one side, hence the designation "flying".

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