Roman, Melly & Roux à Constance, No 8098, circa 1830. Rare turquoise set double calendar centre secondswatch with special escapement.

C. Double body, silver gilt, with glazed back, the band and pendant set with turquoise. D. Eccentric white enamel with Arabic numerals, subsidiary dials for date and day, outer Arabic seconds ring, decorated with a martial infant and two helmets. M. Hinged gilt brass full plate, cylindrical pillars, fusee with chain, deadbeat verge escapement with five short pointed teeth, escape wheel plain steel three-arm balance, flat balance spring, gilt brass continental cock with polished steel end-piece. Signed on the back plate. In good condition. Diam. 61 mm.

Monnier & Rochat, Swiss, No. 6168, circa 1800. Very interesting dead centre seconds watch with calendar and special escapement.

C. Silver gilt with reeded band and glazed back. D. White enamel with eccentric Arabic chapter ring, subsidiary dial for the date and outer seconds ring. Gold "poker and beetle" hands. M. Hinged gilt brass full plate with conical pillars, fusee with chain, Pouzait lever escapement with seconds beating extra large plain four-arm balance covering the back plate almost entirely, flat balance spring, wide gilt brass pierced cock with ruby end-stone. Signed on the dial and movement. In very good condition. Diam. 60 mm.

Lugier de Montpellier, made for Capiaumont à Saint Pons, circa 1840. Rare and fine dead centre second watch with special escapement and pirouette.

C. Silver, "forme quatre baguettes". D. Eccentric white enamel with Breguet numerals, small circular aperture for the visible balance, outer centre seconds ring. M. Inverted gilt brass full plate with going barrel, flat-wheel cylinder escapement with pirouette, plain brass five-arm balance with pirouette, the flat spiral spring set on the pirouette wheel. Signed "Lugier" on the back plate, "Capiaumont" on the dial. In very good condition. Diam. 54 mm.

Dubois et Fils, Swiss, circa 1800. Fine and rare 18 ct. gold dead centre seconds watch with special escapement, pirouette and pendulum.

C. Double body, "forme quatre baguettes" with reeded bezels and band. D. Eccentric white enamel with Breguet numerals and small circular aperture for the pendulum, outer centre seconds ring. Blued steel Breguet hands. M. Hinged gilt brass with cylindrical pillars, fusee with chain, rare double wheel frictional rest escapement of Debaufre type, as improved by Pierre Le Roy the eldest, pirouette with mock pendulum, plain brass five-arm balance with flat balance spring, gilt brass continental cock with polished steel end-piece. Signed on the dial and back plate. In very good condition. Diam. 56 mm.

Bellejean, Neuveville, Swiss, circa 1740. Extremely rare and fine silver watch with special verge escapement.

C. Double body, oignon type, polished. D. White enamel with Roman numerals and outer Arabic minute ring. Gold Louis XV hands. M. Hinged gilt brass with baluster pillars, fusee with chain, very rare and unusual verge escapement with horizontal double escape whee, plain brass three-arm balances, flat balance spring, gilt brass continental cock with polished steel end-piece. Signed on the back plate. In very good condition. Diam. 50 mm.

Anschutz in Targau, circa 1780. Unique silver experimental double side inverted centre seconds hait skeletonised watch with special escapement and "pirouette".

C. Later specially made. D. White enamel on the front with Arabic numerals. Gold Breguet hands. Blued steel seconds chapter ring on the back of the movement. M. GiIt brass, engraved, skeletonised, with "fusée renversée" invented by Jean-Batiste Le Roy, Tompion type half dead beat roller escapement with pirouette. The centre seconds running anti clockwise on the back of the movement. Signed on the dial. In very good condition. Diam. 45 mm.

Frantz Weisshaubt à Prag, No. 33, circa 1880. Unique gilt brass hait skeletonised centre seconds watch with double balance "pirouette" and special escapement.

C. Later, glazed on both faces. D. Later white enamel with Romannumerals. Later hands. M. Hinged gilt brassn full plate, engraved and skeletonised with baluster pillars, fixed barrel with going arbor, unusual double virgule escapement, double balance with pirouette, the balance spring on the pirouette wheel. Signed on the reverse of the front plate. In good condition. Diam. 47 mm.

New England Watch Co., Waterbury, Connecticut circa 1898-1912. Fine nickel skeletonised keyless watch with special escapement.

C. Three piece, "bassine", glazed on both faces, with reeded band. D. Frosted and gilt, skeletonised, with Arabic numerals and subsidiary seconds. GiIt brass "Louis XV" hands. M. Full plate, skeletonised with going barrel, single wheel duplex escapement, monometallic balance with screws, flat balance spring. Signed on the back plate. In very good condition. Diam. 52 mm.

Not signed (Paul Loichot), Charquemont (France), No. 1017, circa 1906. Fine "Argentan" keyless Art-Nouveau watch with one minute tourbillon regulator patented on 11 June 1904, Swiss patent No. 30754.

C. Three piece "bassine et filets", decorated with flowers and foliage in the typical Art- Nouveau style. D. Eccentric white enamel with Roman numerals with a floral decoration. Aperture below the dial disclosing the escapement mounted on the tourbillon carriage. GiIt brass " Louis XV" hands. M. 20-, gilt brass, inverted, straight line lever escapement, bimetallic balance, Breguet balance spring. The escapement is mounted on a tourbillon carriage revolving once per minute. In very good condition. Diam. 58 mm.

Roskopf Patent, circa 1900. Rare and fine 18 ct. gold keyless watch.

C. Four body, massive, "bassine et filets", entirely engraved with a floral and foliage decoration. Gold cuvette engraved with a decoration matching that of the case. D. White enamel with Roman numerals and outer red Arabic minute ring. GiIt brass "Louis XV" hands. M. 18-, nickel plated, three quarter plate, 12 jewels, typical Roskopf patented pin-pallet lever escapement, cut bimetallic balance, Breguet balance spring. Signed on the dial. Roskopf patent trade mark on the case, cuvette and movement. In very good condition. Diam. 52 mm.

Eugène Bornand & Cie., à Sainte Croix, Swiss, circa 1830. Fine silver hunting cased, watch with split centre seconds and special escapement.

C. Four body, engine-turned. D. White enamel with small Roman chapter ring and outer seconds ring. GiIt and blued steel hands. M. GiIt brass, bar calibre with going barrel, JeanRenaud duplex lever escapement. Split seconds with button in the band. In good condition. Diam. 48 mm.

"Criquet", No. 1208, Brevete S.G.D.G., circa 1900. Fine and unusual silver keyless alarm watch.

C. Three body massive, "pomme et gouge", the revolving bezel with small glazed aperture for the alarm setting minute divisions, chased with a floral decoration, the back chased in high relief with a Iocust with outer decoration matching that of the bezel. Silver engine-turned cuvette pierced for the sound, inset on the reverse with a thin blued steel panel increasing the sound transmitted by a pin, in the manner of a gramophone. D. White enamel with Roman numerals, red half hour division, outer minute ring visible through the bezel aperture only. Blued steel fancy hands. M. 17"', gilt brass three quarter plate double train with differential winding, 15 jewels, straight line lever escapement, cut bimetallic balance, Breguet balance spring. Alarm simulating the typical song of locusts. In very good condition. Diam. 48 mm.

John Ellicott, London, No. 4076, circa 1765. Fine and rare gilt brass, pair-cased, early cylinder watch.

C. Double body inner and outer, both polished. GiIt brass dust-cap. D. White enamel with Roman numerals and outer Arabic minute ring (hair lines). Blued steel "poker and beetle" hands. M. hinged gilt brass full plate with elaborated pillars, fusee with chain, cylinder escapement with brass escape wheel, plain steel three-arm balance, flat balance spring, gilt brass English cock with diamond end-stone. Signed on the dust-cap and back plate. In good condition. Diam. 48 mm.

John Arnold & Son, London, Invenit et Fecit, No. 266/567, with London hallmarks for 1812. Fine silver pair-cased pocket chronometer.

C. Double body inner and outer, both polished. D. White enamel with Roman numerals and subsidiary seconds. Gold "poker and beetle" hands. M. Hinged gilt brass full plate with cylindrical pillars, fusee with chain and maintaining power, typical Arnold spring detent escapement with the detent sunk in the back plate, mono-metallic two-arm balance with poising screws, blued steel flat balance spring. Signed on the back plate. In very good condition. Diam. 56 mm.

Urban Jurgensen Sonner, No. 791, Kobenhavn, late XVlllth century, probably completed and sold much later. Rare and fine, 18 ct. gold watch with special escapement.

C. Double body, Louis XVI, polished. D. White enamel, slightly eccentric with Roman numerals and outer Arabic minute ring. Blued steel Breguet hands. M. Hinged giIt brass full plate with cylindrical pillars, going barrel, Double wheel duplex escapement, plain brass three-arm balance, flat balance spring. Signed on the dial and back plate. In good condition. Diam. 43 mm.

Molier à Genève, circa 1790. Fine and rare, 18 ct. gold, small watch with visible balance and special escapement.

C. Double body, Directoire, polished with engraved bezels. D. Small eccentric with Breguet numerals. Blued steel Breguet hands. GiIt brass dial-plate engraved with scrolls, balance visible below the dial. M. Inverted hinged gilt brass full plate with turned pillars, going barrel passing through the back plate, flat-wheel cylinder escapement, plain steel three-arm balance, flat balance spring, blued steel balance bridge with ruby end-stone. Signed on the back plate. In good condition. Diam. 29 mm.

Ls. Coulin (Geneva), circa 1795. Fine and rare silver decimal and duo-decimal watch.

C. Double body, Directoire with engraved bezel, the back engraved with a rosette. D. White enamel divided in two sectors, the decimal hours on the right with Roman numerals, the duo-decimal on the left with Arabic numerals and outer minute ring. Large gold double ended hour hand and gold minute hand. M. Hinged gilt brass full plate with cylindrical pillars, fusee with chain, verge escapement, plain brass three arm balance, flat balance spring, gilt brass continental cock with polished steel end-piece. In good condition. Diam. 52 mm.

Theodore Beyerle, Veil d. Stadt, circa 1800. Fine silver pocket thermometer.

C. Three body, Empire with engine-turned band and glazed back. D. White enamel, graduated for Reaumur degrees. Blued steel hand. M. GiIt brass with bimetallic curb, constructed on the same principle than similar thermometers made by Jürsgensen, Houriet or Breguet. Signed on the dial and the movement. Diam. 54 mm.

Tavernier, circa 1820. Rare 18 ct. gold Tavernier mechanical moon phase astronomic calendar key.

C. Empire, polished, glazed on both faces. D. White enamel on the front with days of the week and outer date ring (hair lines). Blued steel "arrow and serpent" hands. Polished gold on the rear face with moon phase aperture, its age engraved on the border. M. Ail the functions advance by depressing a small lever which protrudes out of the band each time the key is inserted on the winding square. Signed on the dial. In good condition. Diam. 23 mm.

Martin Boeck, Wien, No. 34, with Austrian hallmarks for 1831. Rare and interesting silver "Souscription" watch with special escapement.

C. Three body, "forme quatre baguettes", engineturned. D. White enamel double " souscriptinon" type, with upside down Breguet chapter divised in order to enable the lecture of time within two minutes, inner concentric small reversed small Breguet chapter ring. Blued steel double ended single hand. M. 22"' gilt brass, "souscription" calibre with central barrel, double wheel escapement, plain brass three-arm balance with and polished steel end-piece, flat balance spring with Breguet bimetallic compensation curb on the index. Signed on the movement. In very good condition. Diam. 59 mm.