Split second Watch no. ???

Case: Dial: Movement: 20''', 31 jewels, Provenance: 19?? - Niton, Geneve 1925 - Breguet, Paris 12 Nov 1925/ 21 Sept 1928 1991 - Antiquorum, 14 Apr 1991 est 230-260,000chf unsold "A Monsieur J. Macqué Astronomical watch No. 4802, completed on 12 November 1925, sold on 21 September 1928, for the sum of 17,000 Francs. Gold keyless watch with dual time zones, quarter-repeating, full calendar, thermometer and independent jumping dead split-seconds with subsidiary 1/5th flying hand. Case: 18 ct., four body polished,No.4802, bassine form. Gold cuvette signed: "Breguet, No. 4802". Dial: Mat silver, signed: "Breguet, No. 4802", small dial for the hours with Roman numerals, and concentric week day ring , symetrical dial for local hour with Roman numerals and. concentric outer date ring. Subsidiary seconds with concentric flying 1 /5th seconds hand, and aperture for age and phase of the moon, with semi-circular sector below for the thermometer. Independant jumping dead centre-seconds hand with rejoining split. Blued-steel piques hands. Movement: Gilt brass, 20"', bar caliber ébauche by S. Niton, with two wheel trains, differential winding for the two barrels, 31 jewels, counterpoised straight line lever escapement, cut bimetallic balance. Blued-steel Breguet balance spring. The independent seconds train locked by a bolt in the band, the split hand push-piece on the winding crown. Repeating on gongs with slide in the band. Hand-setting for both time dials with a key. In very good condition Diam. 54 mm. Note: Like many of Breguet watches from this period, the caliber of the movement is of an altogether special design. The addition of a thermometer is rare, and a small lever is provided, in the edge of the dial, to stop the entire watch by arresting the balance. The chronograph sequence is as follows with both hands running: Stop split hand/stop chronograph hand/ start chronograph hand with instantaneous re-unite. The Flying 1 /5th seconds hand is driven from the going-train. A bimetallic strip operates the thermometer through a lever terminating with a rack-and-pinion." 1996 - Antiquorum 12 Oct 1996 est 100-120,000chf sold 157,500chf "Breguet No. 4802, completed on 12 November 1925, sold to Monsieur J. Macque on 21 September 1928, for 17'000 Francs. Very fine and rare 18K gold, keyless quarter repeating, two time zone, moon phase astronomical watch with triple calendar, thermometer, and independent jumping dead split-seconds with subsidiary 1/5th second "foudroyante". C. Four body, massive, "bassine", polished, No. 4802. Hinged gold cuvette. D. Matt silver with eccentric small Roman hour and minute chapter ring with inner days of the week, symmetrical dial for local time with Roman chapters and outer date ring, subsidiary seconds with inner 1 /5th "diablotine", moon phase aperture with its age on the border and centigrade thermometer scale below, Arabic split jumping dead independent second's ring on border of the bezel. Blued steel "pique" hands. M. 20"', gilt brass, bar calibre, double train with differential winding, 42 jewels, counterpoised straight line lever escapement, cut bimetallic balance, Breguet balance spring. The split independent train with flirt on the escape wheel pinion, bolt in the band and split-seconds button on the winding crown. Repeating on gongs with slide in the band.Hand setting with a key for th two time zone dials. Bimetallic thermometer beneath the moon phase volvelle. Signed on the dial and cuvette. In very good condition. Diam. 54 mm. C. Four body, massive, "bassine", polished, No. 4802. Hinged gold cuvette. Notes Like many of Breguet's watches from this period, the calibre of the movement is of an altogether special design. The addition of the thermometer is rare, and a small lever is provided in the edge of the dial, to stop the entire watch by locking the balance. The chronograph sequence is as follow with both hands running: Stop split hand/start chronograph hand with instantaneous re-unite. The flying 1/5th second's hand is driven from the going train.The bimetallic strip operates the thermometer through a lever with rack-andpinion. "