Vanier, rue Ste. Anne à Paris, No. 486-83/8, with Paris hallmarks for 1783. Extremely rare silver centre seconds watch with special escapement.

C. Double body, Louis XVI, polished. D. White enamel with Roman numerals and outer Arabic minute and seconds ring. Gold "fleurs de lys" and blued steel counterpoised centre seconds hands. M. Hinged gilt brass full plate with conical pillars, fusee with chain, frictional-rest escapement of Sully type as improved by Pierre Le Roy, plain gilt brass three-arm balance, flat balance spring, engraved giIt brass balance bridge with polished steel end-piece. Signed on the dial and back plate. In very good condition. Diam. 60 mm.

Not signed, Suisse, circa 1790. Rare and interesting, 18 ct gold, center seconds, self winding watch presented to the celebrated physician Monge

C. Three body, «Louis XVI» type, polished. GiIt brass cuvette engraved with the dedication: " Chaudron, à son ami Monges". D. white enamel with Breguet numerals. Gold «croissant» hands and counterpoised gold centre-seconds. M. Gilt brass, three quarter plate with going barrel, cylinder escapement, plain brass three-arm balance, flat balance spring, gilt brass pierced and engraved balance cock. Pivoted on the border of the back plate, the winding weight oscillates along the side of the back plate with steel banking springs and locking device when the mainspring is fully wound. In very good condition. Diam. 53 mm.

The unique gold medal awarded to Henri Motel in 1834 at the Paris Exhibition of the French Industry Products.

Solid gold medal with the profile portrait of the King Louis Philippe on one side, the symbols of Arts and Industries on the reverse. In original shark-skin fitted box. Diam. 56 mm. Weights 138 g.

Lepaute (Jean-André), Traité d'Horlogerie. First edition, 1755, in 4°, 308 pages, 17 plates.

Full calf binding (worn).

Sully (Henry), Regle Artificielle du Temps. Second edition, corrected and improved by Julien Le Roy, 1737, in 12°, 433 pages, 5 plates.

Full calf binding.

Vigniaux, Horlogerie Pratique. First edition, 1788, in 8°, 342 pages, 12 plates. Full calf binding.

Berthoud Frères, No. 245, circa 1840. Rare and important marine chronometer, made by the sons of Louis Berthoud, but sold by Charles Auguste Berthoud after the separation of the two brothers in 1831.

C. Double body mahogany box with slide on the lid over the glazed observation aperture. Brass gimball with a ladded bowl. Brass case en forme de tabatière. D. White enamel regulator type, with small Roman chapter for hours, subsidiary seconds below, outer Arabic minute ring on the border of the bezel. Blued steel Breguet hands. M. Brass, full plate, fullyjeweled, with steel conical pillars secured by nuts with washers. Fusee with chain, maintaining power, spring detent escapement, three armed compensation balance, with three trapezoidal weights and timing screws, blued steel helical balance spring. Signed "Berthoud Frères on the dial, Auguste Berthoud on the back plate. In very good condition. Dial diam. 80 mm.

J. Fournier, Bd. du Montparnasse No. 57, Paris, No. 1747, circa 1895. Fine mahogany 49 hour going marine chronometer with power reserve indication. C.

Three body mahogany box with external brass handles, glazed upper section with hinged Iid. Brass circular gimbal and bowl. D. Silvered with Roman numerals, subsidiary seconds and up-and-down sector. GiIt brass "spade" hands. M. Brass full plate with cylindrical pillars, fusee with chain and maintaining power, Earnshaw type spring detent escapement, two-arm compensation balance with poising weights and timing screws, free sprung polished steel helical balance spring, diamond end-stone. Signed on the dial. In very good condition. Dial diam. 95 mm.

A.H. Rodanet & Cie. à Paris, No. 421, circa 1869. Fine mahogany, 49 hourgoing marine chronometer with power reserve indication.

C. Unusual double body mahogany box with external brass handles and moulded Iid. Brass circular gimbal and bowl. D. Silvered with Roman numerals, subsidiary seconds and up-and-down sector. GiIt brass "spade" hands. M. Gilt brass full plate with cylindrical pillars, fusee with chain and maintaining power, Earnshaw type spring detent escapement, two-arm compensation balance with cylindrical poising weights and timing screws, free sprung blued steel helical balance spring with terminal curves, diamond endstone. Signed on the dial. In very good condition. Dial diam. 95 mm.

F. Rôtig, Le Havre (France), No. 231, circa 1880. Fine rose wood, 56 hour going marine chronometer with power reserve indication.

C. Double body rose wood box with inset brass handles and brass borders (the upper glazed section with hinged lid, now replaced by a mahogany panel). Brass circular gimbal and bowl. D. Silvered with Roman numerals, outer Arabic minute ring, subsidiary seconds and up-and-down scale. Gilt brass "spade" hands. M. Brass full plate with conical balance, spotted finished, fusee with chain and maintaining power, Earnshaw type spring detent escapement, two-arm compensation balance with cylindrical poising weights and timing screws, free sprung palladium helical balance spring with terminal curves, diamond end-stone. Signed on the dial. In very good condition. Dial diam. 100 mm.

J. Auricoste à Paris, No. 554, circa 1930. Fine mahogany 49 hour going marine chronometer with power reserve indication and electric impulse contactors.

C. Three body mahogany box with external brass handles, glazed upper section with hinged lid. Brass circular gimbal and bowl. D. Silvered with Roman numerals, subsidiary seconds and up-and-down sector. Gilt brass "spade" hands. M. Brass full plate with cylindrical pillars, fusee with chain and maintaining power, Earnshaw type spring detent escapement, two-arm compensation balance with poising weights and timing screws, free sprung blued steel helical balance spring with terminal curves, diamond end-stone. Signed on the dial. In very good condition. Dial diam. 85 mm.

J. Auricoste, Horloger de la Marine, 10, rue la Boetie à Paris, circa 1910. Fine and unusual small sidereal counter.

C. Three body mahogany deck-watch type box. Brass bowl with screwed bezel. D. White enamel, outer Arabic sidereal seconds ring and subsidiary small 60 sidereal minute register. Blued steel hands. M. 20-, brass, three quarter plate, 15 jewels, with cylindrical pillars, going barrel, pivoted detent escapement, cut bimetallic balance, blued steel balance spring with terminal curve. Signed on the wooden box. In very good condition. Dial diam. 50 mm.

J. Auricoste, Horloger de la Marine de l'Etat, 10, rue la Boetie Paris, No. 62.159, circa 1950. Fine mahogany keyless "Montre de Comparaison" with centre seconds, in original fitted mahogany travelling box.

C. Fixed on a gilt brass plate hinged in a double body mahogany deck-watch type box. D. Mat silvered with Arabic numerals and outer minute and seconds ring. Blued steel " spade" hands. M. 24"' frosted and gilt, three quarter plate, 18 jewels, straight line lever escapement, mono-metallic balance with screws and self compensating Breguet balance spring.Signed on the box, plate and movement. In perfect condition. Dial diam. 55 mm.

J. Auricoste, «Type 20», made for the Civil Market, 1950's. Very fine stainless steel military wristwatch with round button chronograph and register.

C. polished, satined, graduated revolving black bezel in 24 hours, screwed back, waterproof. D. black with radiumed Arabic numerals + auxiliary seconds and 30 minutes register dials. «Skeleton» radiumed hands. M. 15 1/4- rhodiumed, 17 jewels, lever escapement, monometallic balance, antishock system, self-compensating Breguet balance-spring. Dial and movement signed, numbered on the case. In excellent condition. Diam. 38 mm.

J. Auricoste, «Type 20», made for «l'Armée de l'Air Française», 1950's. Fine stainless steel military wristwatch with round button chronograph and register.

C. polished, satined, revolving reeded bezel. D. black with radiumed Arabic numerals + auxiliary seconds and 30 minutes register dials. «Skeleton» radiumed hands. M. 15 1/4"' rhodiumed, 17 jewels, lever escapement, monometallic balance, antishock system, self-compensating Breguet balance-spring. Dial and movement signed, numbered on the case. In very good condition. Diam. 38 mm.

Dodane, Type 21, made for "L'Armée de l'Air Française" 1960's. Fine stainless steel military wristwatch with round button chronograph and register.

C. polished, revolving reeded bezel in 12 hours, screwed back, waterproof. D. black with radiumed Arabic numerals + auxiliary seconds and 30 minutes register dials. «Bâton» radiumed hands. M. 14 3/4"' rhodiumed, 17 jewels, lever escapement, monometallic balance, antishock system, selfcompensating Breguet balance-spring. Signed on the dial. In very good condition. Diam. 38 mm.

Hanhart, German, made for the Luftwaffe in the 1950's. Chrome cased keyless watch, with chronograph, 30 minute instantaneous recorder and " retour en vol".

C. Chrome finished, three piece, "demi-bassine", the back engraved: "FFA-18-1124". D. Black painted, with Arabic numerals and indexes, outer Arabic chronograph ring, subsidiary seconds and minute register. Luminescent "bâtons" hands. M. 16"' nickel plated, 17 jewels, straight line lever escapement, monometallic balance, blued steel Breguet self compensating balance spring. Chronograph with visible work, push-pieces in the band. In good condition. Diam. 50 mm.

Breguet No. 2764, sold to "Marine Nationale Aeronautique Navale" circa 1956. Chrome cased keyless watch, with chronograph and 60 minute instantaneous recorder. Original fitted deck box with glazed aperture in the cover.

C. chrome finished, three piece, "demi-bassine" with screw on milled bezel, the back engraved: "Marine Nationale Aeronautique Navale -0021 B-Breguet". D. Black painted, with Arabic numerals outer Arabic chronograph ring, subsidiary seconds and minute register. White painter "pear" hands. M. 18"' nickel plated, 18 jewels, straight line lever escapement, monometallic balance, blued steel Breguet self compensating balance spring. Chronograph with visible work, button on the winding crown. In good condition. Diam. 50 mm.

Breguet «Armée de l'Air», Type 20 5101/54, Ref. 7356, 1950's. Fine stainless steel military wristwatch with «retour en vol» round button chronograph and register.

C. polished, screwed back, waterproof, reeded revolving bezel. D. black with painted Arabic numerals + auxiliary seconds and 30 minutes register dials. «Skeleton» radiumed hands. M. 14"' rhodiumed, 17 jewels, lever escapement, monometallic balance, selfcompensating Breguet balance-spring. Dial and case signed. In very good condition. Diam. 38 mm.

Breguet No. 3693, "Chronomètre de bord", sold to Air France in 1938. Fine mahogany keyless deck-watch.

C. Double body mahogany, the movement is set on a fixed black dial plate. D. Mat silver with Breguet numerals and offset subsidiary seconds. Blued steel "spade" hands. M. 22"', rhodium plated, 19 jewels, straight line lever escapement, brass-invar Guillaume balance, Breguet balance spring. Amagnetic dust-cap. Signed on the dial and movement. In very good condition. Dial diam. 55 mm.