Gold, sapphires Watch no. 69276

Case: YG, sapphires, shutter over dial Dial: Movement: Provenance: 19?? - Haas Neveux, Geneva 19?? - Retailed by Ghiso, Buenos Aires 20?? - Heritage Auctions, 21 May 2013, reserve $8,000, unsold, " Haas Neveux & Co. Very Rare & Elegant 18k Gold & Sapphire "Guillotine" Gent's Pocket Watch For A. & R. Ghiso, circa 1920 Case: three piece, 18k yellow gold, band and bow with channel set French cut sapphires, 46 mm, plain polished back, front cover with a small glazed aperture for the dial disclosed by polished gold shutters that flip open and close by depressing a sapphire set button on the base of the band, case No. 69276 Dial: matte silver, black Arabic numerals, blued spade hands Movement: 38 mm, rhodium plated, Geneve stripes decoration, 18 jewels, eight adjustments, lever escapement, bi-metallic compensated balance, Breguet hairspring, No. 69276 Signed: case with H.N.C. hallmark for Haas Neveux & Co., dial signed Ghiso Note: This unique timepiece has an unusual design to protect the dial making the case a fully closed hunters style. By pressing the push button the shutters instantaneously open to reveal the dial. The idea was invented and patented by E. Jaeger in 1910 (French patent #412821) and used mostly in Cartier watches. Interestingly, there is one "guillotine" watch signed Cartier with an identical Haas Neveux movement. The example here was made for A. & R. Ghiso, important Buenos Aires jewelers who retailed watches by Cartier, Patek Philippe, Vacheron Constantin and Haas Neveux. Condition Report*: Type: Haas Neveux & Co. Very Rare & Elegant 18k Gold & Sapphire "Guillotine" Gent's Pocket Watch For A. & R. Ghiso Dial: matte silver, Arabic numerals Hands; blue spades Metal: 18k yellow gold Gram Weight: 52.8 Case No: 69276 Case Info: three body, sapphire set band and bow Case Width: 46 mm Crystal: glass Watch Movement: 38 mm, rhodium plated, Geneve stripes decoration, 18 jewels, eight adjustments, lever escapement, bi-metallic compensated balance, Breguet hairspring, No. 69276 Circa: 1920 Condition: case, movement and dial are all in very good condition, some very slight and light fine scratches on the case back"