Cha. Frodsham, By Appointment to the King, 115 New Bond Street, late of 84 Strand, London, No 090099 ADFmsz, bearing the London Hall Marks for 1905-1906. | Important Watches, Wristwatches and clocks

Important Watches, Wristwatches and c...

Tokyo, Dec 15, 1989

LOT 220

Cha. Frodsham, By Appointment to the King, 115 New Bond Street, late of 84 Strand, London, No 090099 ADFmsz, bearing the London Hall Marks for 1905-1906.

JPY 9,000,000 - 11,000,000

USD 60,000 - 90,000

Sold: JPY 14,306,250

Fine and important 18ct gold keyless pocket chronometer with a 6 minute tourbillon regulator. Three body massive "pomme et bassine" polished case. Gold glazed cuvette. White enamel dial (Willis) with Roman numerals and subsidiary seconds. Blued steel "pear" hands. Very fine gilt brass 20three quarter plate movement, 25 jewels, screwed settings. Six minute tourbillon (Nicole Nielsen) driven by the second wheel pinion, with a three equidistant armed polished steel carriage, English lateral lever escapement, cut-bimetallic balance with gold poising screws, blued steel balance spring with terminal curve, free sprung. Signed on the dial and on the movement. In very good condition.

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English makers usually set their high precision watches with the one minute tourbillon regulator and later, after Boniksen, with the 521/2 minute karusel, such a pocket chronometer, made in England with a six minute tourbillon regulator is therefore extremely rare (only six pieces are actually known). The four minute and the six minute tourbillons were for the first time experimented by Breguet in order to avoid the disadventage of the one minute tourbillon which could be influenced by the inertia resulting from the speediness of its revolutions. Diam.: 60 mm. This watch is described and illustrated in the R. Meis book: " Das Tourbillon" page 211.