Anonymous, circa 1793. Very rare 18 ct. gold decimal and duo-decimal dial watch with dual calendar.

C. Double body, Louis XVI, polished. D. Enamel with two small chapter rings for decimal and duodecimal time, both with Breguet numerals,further subsidiary dials for Republican calendar of 30 days and days of the Decade (republican week of ten days). Gilt brass hands. 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. 53 mm.

P. B. Lepaute à Paris an III, made in 1794. Fine and extremely rare eight-day going decimal and duodecimal travelling clock, striking the panels decimal time, identical to that made for the Concours sur les moyens d'organiser les Montres & les Pendules en divisions décimales, organised by the Convention Nationale, by the Décret voted on 21 Pluviôse, second year of the Republic.

C. Gilt bronze rectangular with glazed side and back door, surmounted by a gallery concealing the folding handle. D. White enamel with Arabic numerals for the decimal time, outer decimal minute ring, the Roman duodecimal hour ring on the border of the bezel, divided into twice twelve hours (chipped on the edge of the winding holes). Gilt brass Breguet decimal hands, star hand for the regular time. M. Brass three train rectangular with going barrels, the going train with anchor escapement, short pendulum with knife edge suspension, with lock for transport. Striking the decimal hours and the decimal ten minutes on two bells with independent trains, the two count-wheels on the back plate control the decimal strike mechanism as follow: 1 single stroke at 10 minutes 1 double stroke at 20 minutes 1 double stroke and 1 single stroke at 30 minutes 2 double strokes at 40 minutes 2 double strokes and 1 single stroke at 50 minutes plus the repetition of the previous hour. 3 double strokes at 60 minutes 3 double strokes and 1 single stroke at 70 minutes 4 double strokes at 80 minutes 4 double strokes and 1 single stroke at 90 minutes 5 double strokes plus the hours. Signed on the dial and back plate. h1 very good condition. Dim. 22 x 15 x 10 cm.

Lepaute à Paris, circa 1798. Rare and very fine mahogany 15 day going, hour and quarter-striking longcase regulator with centre-seconds, equation of time, Gregorian and Republican calendar.

C. With three glazed panels and applied gilt bronze ornaments. D. White enamel by Dubuisson, with Breguet numerals, inner days of the week, apertures below "12" for the annual calendar with the Revolutionary months, above " 6" for the annual calendar and the Gregorian months. Chased gilt brass hands, counterpoised blued-steel centre-seconds hand and polished steel mean time hand. M. Weight driven with single endless rope driving both the going and the striking train, pin wheel Lepaute anchor escapement,seconds beating grid-iron pendulum with thermometer. Spring blade suspension. Equation cam, Gregorian and Republican calendar rings behind the dial visible through an aperture. Signed on the dial. In very good condition. Dim. 213x50x28cm.

J.J. Lepaute, Horloger du Roy à Paris, 247 rue Saint Honoré, Paris, No. 43, circa 1815. Extremely fine mahogany centre-seconds mantel regulator with equation of time, annual calendar and remontoire.

C. Rectangular moulded with box-wood inlaid borders. D. Silvered chapter ring with Roman numerals and inner semi-circular sector for the equation of time, the subsidiary revolving year calendar ring below the dial. Gilt brass dial plate with apertures for indicating the state of winding. Blued-steel "fleur-de-lys" hands and "arrow" pointer for the annual calendar. M. Brass, secured on a solid brass bracket, with two going barrels, inverted dead-beat escapement, with Lepaute's differential remontoire disposed at right angles and released every ten seconds with fly regulator, half-seconds beating gril-iron pendulum with spring suspension. Signed on the dial and back plate. In very good condition. Dim. 60 x 32 x 23,5 cm.

J. A. Lepaute - Traité d'Horlogerie, Paris, 1767. In 4°, - Full calf binding (worn).

Anonymous, circa 1790. Fine and rare eight-day going weight- driven glass-plate skeleton clock.

C. Single glass plate, the border engraved with a garland of laurel, secured on a black marble base by two brass cylindrical pillars. D.White enamel chapter ring with Breguet numerals. Blued-steel skeletonised Breguet hands. M. Elegant, fully skeletonised train, and weight-driven with two weights and a single barrel, pin-wheel anchor escapement, half-seconds beating pendulum with knife edge suspension. In very good condition. Dim. 45 x 25 x 9,5 cm.

Lefevre à Paris, circa 1790. Very fine and rare eight-day going, hour and half-hour striking, weight driven, centre-seconds skeleton mantel regulator.

C.Massive brass frame, designed as an upside clown "Y", with cylindrical pillars, set on a marbie base "rouge grillottes". D. White enamel with Roman numerals and inner seconds ring. Very fine gilt brass Louis XVI hands, the counterpoised end of the minute hand, pierced and engraved with an "L". M. Going-train with two weights and a single barrel, pin-wheel anchor escapement set on the back of the frame, half-seconds beating grid-iron pendulum with spring blade suspension. Striking train with going-barrel, the count-wheel on the front face, striking on a bell. Signed on the dial. In very good condition. Dim. 48x20x14cm.

Bagillos à Riom, circa 1810. Very fine, gilt and black lacquered bronze hour and half hour striking, "pendule au nègre", after a washed design, preserved in the Musée des Arts Décoratifs, Paris.

C. Oval gilt bronze base on four bun feet with applied mounts designed as a monkey swinging between palet trees flanked by parrots feeding from pendant baskets and supporting a well modelled figure of a negro carrying a bale of cotton, a letter in his right hand and a cane in his left. D. White enamel with Roman numerals. Gilt brass arrow hands. M. Brass circular with going barrels for both the going and the striking train, anchor escapement, short pendulum with silk suspension. Striking on a bell with count wheel on the back plate. Signed on the dial. In very good condition. Dim. 35 x 26 x 9 cm.

Le Roy à Paris, au ci-devant Palais Royal, No. 3245, bearing the hallmarks for 1798-1809. Fine 18 ct. gold, dumb quarter-repeating watch with Republican calendar.

C. Double body, Directoire, polished. D. White enamel with Breguet numerals and gilt inner calendar ring on 30 days. Blued-steel Breguet hands. Hinged gilt brass dust-cap. 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 pierced and engraved with the monogram "L. R.", polished steel end-piece. Repeating on the case with two hammers, by depressing the pendant. Signed on the dial, the dial plate, the dust cap and the back plate. In very good condition. Diam. 59 mm.

Leroy, Horloger de S.A.I. et R. Madame, à Paris, No. 7098, circa 1810. Fine 18 ct. gold, pull-activated, quarterrepeating watch.

C. Three body, Empire, with reeded band and polished back. Hinged gilt brass cuvette. D. Gold engine-turned with Breguet numerals on a white chapter. Blued-steel Breguet hands. M. 21-, gilt brass, bar calibre with free-standing barrel, cylinder escapement with plain gilt brass threearm balance. Quarter-repeating on gongs by pulling the pendant, once released by the button in the band. Signed on the dial and the cuvette. In very good condition. Diam. 57 mm.

Le Roy, Horloger de S.A.I. et R. Madame à Paris No. 3191, circa 1810. Extremely fine, historical 18 ct. gold and enamel diamond set "médaillon à tact" with matching clip. With a presentation dedication Signed " Emile".

C. Double body with touch pieces in form of large old cut diamonds linked by a wire with half hour pierced seed pearl markers, cover and back of grey translucent enamel over engine-turning and diamond-set "à tact" arrow. Gold cuvette with a dedication "Donné par Emile" on an applied gold ribbon with gold inscription over a dark blue champleve enamel ground. D. Small eccentric Roman chapter engraved on the cuvette with engine-turned centre. Single blued steel arrow hand. M. Gilt brass, Lepine calibre with free standing barrel, cylinder escapement, plain brass three-arm balance, flat balance spring. Signed on the back, beneath the enamel and on the barrel. In very good condition, in a later fitted box, specially made by Tiffany Young & Ellis, New York. Diam. 51 nui. This watch and the matching clip are set with 17 carats of old cut diamonds.

Le Roy au Palais Royal No. 88, No. 2481, circa 1800. Fine 18 ct. gold and enamel, pearl-set hunting cased "médaillon à tact" watch.

C. Two body, "forme collier" with reeded band with seed pearl hour and half hour à tact points framed in a yvire decoration, the cover and back decorated in blue translucent enamel over engineturning, gold paillonne decoration on the border of the back and pearl set "à tact" arrow. Gilt brass cuvette. D. Small eccentric, white enamel with Breguet numerals set in the cuvette. Blued-steel single Breguet hand. M. 16? gilt brass, Lepine calibre with free-standing barrel, cylinder escapement, plain brass three-arm balance, flat balance spring. Signed on the cuvette. In very good condition. Diam. 45 mm.

Le Roy au Palais Royal No. 88, No. 3908, circa 1800. Fine 18 ct. gold and enamel, diamond-set hunting cased "médaillon à tact" watch.

C. Two body, "forme collier" with engine-turned band with gold touch studs, the cover and back decorated in blue translucent enamel over engineturning, gold monogram "H.R." on the back and diamond set "à tact" arrow, gilt brass cuvette. D. Small eccentric, silver, with Breguet numerals set on the cuvette. Gold counterpoised single hand. M. 16? gilt brass, Lepine calibre with freestanding barrel, cylinder escapement, plain brass three-arm balance, flat balance spring. Signed on the cuvette. In very good condition. Diam. 54 mm.

Le Roy & Fils, Horlogers, Palais Royal, 13 et 15 Galerie Montpensier, Paris, No. 32477, circa 1850. Fine 18 ct. gold hunting cased, early keyless quarter-repeating watch.

C. Four body, massive, "bassine et filets" with reeded band, engine-turned cover engraved with a coat of arms, the back with the monogram "A.O. M". Gold cuvette. D. White enamel with Roman numerals. Blued-steel Breguet hands. M. 17", nickel plated, "fausses côtes" decoration, 29 jewels, gold train of wheels, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring. Repeating on gongs with slide in the band. Early stem winding design by Adrien Philippe, (French patent No. 1317 of April 22, 1845),without the possibility of turning the crown anti-clockwise during the winding. Signed on the cuvette. In very good condition. Diam. 45 mm.

Leroy, circa 1860. Extremely fine and rare mahogany, month going, weight-driven centre-seconds, long case regulator with equation of time and year calendar.

C. Rectangular with glazed door and side panels, ogee pediment with dentilled frieze. D. Silvered with Roman numerals, inner half-moon equation sector. blued-steel Breguet hands. Subsidiary silvered year calendar ring revolving below the dial with inner visible brass equation cam, bluedsteel pointer. M. Brass rectangular with cylindrical pillars, the barrel with maintaining power, Graham dead beat escapement set on the back plate, seconds beating grid-iron pendulum with fine silvered thermometer on the bob. Signed on the dial. In very good condition. Dim. 210 x 58 x 34 cm.

The Masterpiece of L. Leroy for the Exposition universelle of 1878 An outstanding heavy gold pocket watch, with 11 complications made for Count Nicolas Nostitz, in an Exhibition case by J. Nodiot especially created for Carvalho Monteiro. S. Leroy A Paris -on dial. J. Nodiot, Fecit 1896 -on case.

C. 18ct. gold, four-body, massive, "bassine et filets" form, with milled edge to the front glass and the inset chased back panel.The pendant modelled as a double-sided visored helmet with two-colour gold epaulettes and surmounted by the winding crown designed as a Count's coronet set with small facetted rubies and emeralds, a ring of pearls and decorated in scarlet translucent enamel, with the gold centre releasing the case spring. D. Front: Six piece in white enamel with scales for chronograph and recorders, flying 1 /5th.seconds, time with Roman hour numerals, perpetual calendar, moon phase and thermometer. Back: Two part, the outer ring fixed to the hinged cuvette bezel, marked with 44 cities, the inner fixed to the back of the movement with Roman hour and Arabic minute numerals. Blued steel and gold hands throughout. M. Frosted and gilt of bridge caliber, 39 jewels, two-train with twin going-barrels with differential winding in both directions from the crown, straight line lever escapement with counterpoised lever, two-arm cut compensation balance with gold timing weights, blued-steel helical balance spring with terminal curve and index regulator. The second train driving both the independent seconds with flying 1 /5th.'s and the fly-back centreseconds chronograph and the minute and hour recording. Minute-repeating on two gongs with slide in the band of the case. Additional pushpieces and hand-setting detents in the band, engageable only when the case back is opened. Signed on the dial. In perfect condition. Diam. 60mm. minimum

Le Roy & Fils, Horlogers de la Marine, Palais Royal, 13 et 15 Galerie Montpensier, Paris, 211 Regent Street, London, No. 44281, case No. 9297, circa 1880. Very fine and rare 18 ct. gold hunting cased, keyless minute-repeating watch with dead independent centre-seconds.

C. Four body, massive, "bassine et filets", polished, monogram "A.H." engraved on back, " S.J." on the cover. Gold cuvette. D. White enamel with Roman numerals and outer Arabic minute and seconds ring. Blued-steel Breguet hands. M. 19"' gilt brass, double train with differential winding, 29 jewels, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring. Repeating on gongs with slide in the band. Dead centre-seconds independent train with boit in the band. Signed on the cuvette. In very good condition. Diam. 52 mm.

Le Roy & Fils, Horlogers de la Marine, Palais Royal, 13 et 15 Galerie Montpensier, Paris, 211 Regent Street, London, No. 49017, case No. 15898, circa 1880. Very fine and rare 18 ct. gold hunting cased, keyless watch.

C. Four body, massive, "bassine et filets", polished the back engraved with the monogram " L.G." below a Ducal crown, the cover with a coat-of-arms. Gold cuvette. D. White enamel with Roman numerals, outer Arabic minute ring and sunk subsidiary seconds. Gold "spade" hands. M. 18"', gilt brass, 18 jewels, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring. Signed on the cuvette. In very good condition. Diam. 49 mm.

Le Roy & Fils, Horloger de la Marine, Palais Royal, 13 & 15 Galerie Montpensier, Paris. 57 New Bond Street, London, No. 55796, case No. 4567, circa 1900. Fine 18 ct. gold, hunting cased keyless watch with enamel crest and monogram.

C. Four body, massive, bassine et filets, the cover with the monogram "OT" below a Ducal crown, the back with a Ducal coat-of-arms. Gold cuvette. D. White enamel with Roman numerals, outer Arabic minute ring and sunk subsidiary seconds. Gold fleurs de lys hands. M. GiIt brass, 18 jewels, counterpoised adjustable straight line lever escapement, cut bimetallic balance, Breguet balance spring. Signed on the cuvette. In very good condition. Diam. 51 mm.

Le Roy & Son, 57 New Bond Street, London, No. 5840, with the London hallmarks for 1888. Fine 18 ct. gold, keyless, minute repeating, moon phase astronomical watch with perpetual calendar.

C. Four body, massive, "bassine et filets", polished. Gold cuvette. D. White enamel with Roman numerals, sunk subsidiary dials for the days of the week, the months of the leap-year cycle, the dates and the seconds with inner moon phase aperture. Blued-steel "spade" hands. M. 18"', frosted and gilt, 26 jewels in gold screwed settings, English lateral lever escapement, cut bimetallic balance, blued-steel balance spring with terminal curve. Repeating on gongs with slide in the band. Signed on the movement. In very good condition. Diam. 53 mm.