Platinum & diamond Wrist Chronometer no. 6658

Case: s/n; 147, platinum and diamonds Dial: simple hour, minutes Movement: s/n; 6658, 2¾''' (6.4 x 9 mm), 18 jewels, 8 adj, Geneva seals obtained on April 4, 1931 and was one of one, so an piece-unique and similar to the "Omega Marine" case design. Provenance: 1931 - Niton, Geneve 2010 - Bonhams, 2019 - Antiquorum Antiquorum, 28 Apr 2019 "NITON ART DECO MANUAL-WINDING LADY'S WRISTWATCH WITH PATENTED WINDING- AND SETTING-MECHANISM AND PATENTED WATER-RESISTANT CASE; PLATINUM AND DIAMONDS Platinum, diamond-set with 80 round-diamonds and 10 baguette diamonds, manual-winding, vertical rectangular-shaped, Art Deco lady's wristwatch with invisible winding- and setting- crown and waterresistant case. Brand Niton Year circa 1930 Movement No. 6658 Calibre 2¾ ''' x 9''' (6.4 x 9 mm.), baguette, rhodium-plated, with going barrel, straight-line lever escapement, compensated balance and blued steel hairspring with terminal curve, Geneva Quality Hall Mark Case No. 147 Material platinum and diamonds Bracelet black cord strap with two platinum diamond-set (4 round diamonds) rings Buckle 18K white gold buckle (by Gay Frères, Geneva) Caliber 2¾ ''' x 9''' (6.4 x 9 mm.), baguette, rhodium-plated, with going barrel, straight-line lever escapement, compensated balance and blued steel hairspring with terminal curve, Geneva Quality Hall Mark Dimensions 10.2 x 49 mm. Accessories copies of the invention patents. https://catalog.antiquorum.swiss/en/lots/niton-lot-320-149 Notes; Niton S.A., Geneva Swiss trademark registered by Jeannet, Morel and Bourquin under No. 45 822, on December 12, 1919, under the name “Niton S.A., Fabricants d’horlogerie, Manufacture de montres artistiques, chronomètres, montres plates et ultra-plates, montres-bracelets à heures sautantes, à quantième et phases de lune” (Niton S.A., Manufacturers of timepieces, Manufacture of artistic watches, chronometers, flat and ultra-flat watches, jumping hours wristwatches, with calendar and moon phases). The manufacture of Niton watches was created in Geneva in 1919 by two craftsmen from Vacheron Constantin, Alfred Bourquin (1887-?) and Edouard Morel (1887-?). It was established in 1924 at 24, bis rue de la Servette. At first, they specialize in the manufacture of watches whose movements are designed and manufactured by them. They are distinguished by their ultra-thin pocket watch calibres and their “baguette” movements with winders from below, at 12 o’clock or 3 o’clock; although they manufacture a whole range of other calibres, in particular of form, and, jewellery watches. The sales method consists in selling directly to stores (for example, Gübelin in Lucerne, Golay Fils & Stahl in Geneva) or watch manufacturers, to which it provides either the movements alone or complete watches (for example, Chopard or Patek Philippe in Geneva). Production remains artisanal. Changing modes, the crisis of the 1930s, industrial productions will force them to change course and move towards other manufacturing concepts. In 1940, Niton sold his manufacturing rights to Ebauches S.A. of Granges / Grenchen. Finally, the brand was bought in 1957 by Carlo Sarzano, who will give it a new impetus by producing gold and gold metal watches of quality. In 1971, Niton merged with Sarcar S.A., already owned by Carlo Sarzano since 1948, and legally de facto disappears. " Bonhams, LOT 324, SWISS. A FINE AND VERY RARE PLATINUM AND DIAMOND SET WRISTWATCH WITH AN EARLY FORM OF SEALED CASE DESIGN 1920's. The Haslinger Collection and Fine Watches and Wristwatches including the Dr George Fisher collection 15 Dec 2010, 14:00 GMT, London, New Bond Street Jewelled lever movement with cut and compensated balance, silvered dial with Arabic numerals and blued steel hands, platinum hinged case the movement sliding out, which itself is contained within a platinum case and with a very slim rectangular winder, the main body with fret work sides and articulated lugs, set with rows of brilliant cut diamonds and large baguette cut diamonds running horizontally, fitted cord strap with white gold locking clasp 10mm x 47mm. Footnotes; This particular watch is very unusual and features a very early form of water/dust proofing to the case. It is very similar to the Omega Marine case design which was patented as No.146.310 on March 10, 1930, some time after the manufacture of this current example. https://www.bonhams.com/auctions/17865/lot/324/