A9365

Rare English Six Minute Tourbillion

£24,500.00

Signed  Joseph White & Son Makers to the Admiralty Coventry & London - D. Norris, Unico Agente para Brazil
Hallmarked London   1912
A fine large early 20th Century English tourbillion in a silver open face case and deck box.
Diameter   59 mm         

Out of stock

Description

A fine large early 20th Century English tourbillion in a silver open face case and deck box.  Gilt half plate keyless movement with going barrel.  Rare flying 6 minute tourbillion carriage rotating once every six minutes.  Plain cock with diamond endstone. Compensation balance with freesprung blue steel overcoil hairspring. English table roller lever escapement. Screwed in jewelling, escape and lever pivots with endstones. Signed white enamel dial with subsidiary seconds, Roman numerals, blue steel hands. Substantial plain silver open face case with gold hand set, hinge and thumb pieces, gilt winding button, silver  bow.  Maker's mark “W.B” in a rectangle and number corresponding to that on the movement.  Fitted in a three tier mahogany deck box with brass furniture, signed and numbered circular bone plaque on the lid.  Two spare flat glass crystals.

A very rare variation on the tourbillion rotating escapement.  Although the carriage resembles that of a centre seconds karrusel it is directly driven by the train.  The carriage of a karrusel is passively rotated by one of the train wheels.  This carriage  rotates more slowly than a one minute tourbillion as it also carries the fourth wheel.  Examples of this form of tourbillion are very rare, this example being in excellent condition and benefiting from having a deck box.  The firm of Joseph White manufactured watches in Earlsdon, Coventry.  Much of their high quality output was sold to the Admiralty. Casemaker William Bullock

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