Pink gold Wrist Chronometer no. 49309

Case: Double dial revolving case Dial: Movement: Two numbers 49309 & 49310, Provenance: 1907 - Haas Neveux, Geneve 1998 - Antiquorum, 18 Apr 1998, est CHF12-14,000, sold CHF 12,650 , "Probably Niton Geneva, No 49309 and No 49310, made for the French Market, for E. Dreyfous "To Their Majesties", 1930's. Very fine, unusual and very rare, flat, double-face and double movement, 18K yellow gold gentleman's wristwatch with 18K pink gold deployant clasp. C. massive, polished, wide bezel, mobile central lugs bearing a special system of attachments hooded between the two bodies of the cases, sapphire-set winding-crowns. D. "guilloche" silver with painted Breguet numerals on a plain reserve on one side, on the other side, with painted radial Roman numerals + auxiliary seconds dials on the nines. "Spade" blued steel hands. M. each: 10"' Geneva Quality Hall Mark, rhodium plated, "fausses cotes" decoration, 18 jewels, lever escapement, cut bimetallic balance, extraadjusted, flat balance-spring. Signed on the dials, numbered on the movements and under the dials. Diam. 33 mm." 2015 - Dorotheum auction, 27 Nov 2015, est EUR9-15,000, sold EUR 11,250, "wristwatch with reversible casing for second time, gold 750, two lever movement, no. 49309 and 49310, Geneva seal, partly guilloché dials, Roman and Arabic numerals, small second, Ø ca. 32 mm, ca. 1930, folding clasp, 57 g"