WINNERL | A RARE GOLD EARLY KEYLESS WINDING POCKET CHRONOMETER WITH THIRTY-TWO HOUR POWER RESERVE INDICATIONCIRCA 1845, NO.433

• Movement: gilded three-quarter plate, spring detent escapement, free-sprung bi-metallic compensation balance with timing screws and gold asymmetric poising weights, blued steel helical spring with terminal curves, diamond endstone, fusee and chain with maintaining power, cylindrical pillars, signed and numbered Winnerl, no.433• Dial: white enamel, Roman numerals, sector for 32-hour power reserve, subsidiary seconds, outer minute ring, signed Winnerl no.433• Case: gold, engine turned back centred with engraved monogram 'CM', engine turned bezels and band, pusher beside pendant for engaging crown winding, gold cuvette, case and cuvette each with maker's mark JP for Jules Perot and numbered 433 with a W above, additionally numbered 665 with a P beneath

Antiquorum Geneva, 23 October 1999, lot 41

Movement: running at time of cataloguing and appears to be in good aesthetic condition with some light tarnishing. Dial: appears to be in good condition Case: In good overall condition retaining good clear engine turned decoration.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. All dimensions in catalogue descriptions are approximate. Condition reports may not specify mechanical replacements or imperfections to the movement, case, dial, pendulum, separate base(s) or dome. Watches in water-resistant cases have been opened to examine movements but no warranties are made that the watches are currently water-resistant. Please note that we do not guarantee the authenticity of any individual component parts, such as wheels, hands, crowns, crystals, screws, bracelets and leather bands, since subsequent repairs and restoration work may have resulted in the replacement of original parts. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue. In particular, please note it is the purchaser's responsibility to comply with any applicable import and export matters, particularly in relation to lots incorporating materials from endangered species.NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

**Please be advised that bands made of materials derived from endangered or otherwise protected species (i.e. alligator and crocodile) are not sold with the watches and are for display purposes only. We reserve the right to remove these bands prior to shipping."

Joseph-Tadeus Winnerl (1799-1886) was born in Styria, Austria. After a time spent in the employ of Johann Heinrich Kessels in Altona, Winnerl travelled to Copenhagen where he worked for Urban Jürgensen between 1827 and 1829. It has been said that a few days after his arrival, Urban addressed Winnerl saying: "you have deceived me! Yes, you've deceived me! I asked you if you were competent and you just evaded the question. Now, in eleven days, you have produced better work than any of my craftsmen. From now on your are in my employ" (see: J. Knudsen, The Jürgensen Dynasty, ACC 2013, p.130). Upon leaving Jürgensen in 1829, Winnerl settled in Paris and for a period worked for Breguet. Adolph Lange served as Winnerl's apprentice for four years before returning to Dresden in 1841 (see op. cit.). Winnerl was especially renowned for his chronometers which were admired for their 'simplified' construction; this allowed them to be produced economically and in direct competition to those of the English. At the 1837 Société d'Encouragement pour l'Industrie Nationale, Winnnerl's chronometers earnt him a gold medal, he received a further gold medal for his chronometers and a constant force clock escapement at the 1839 Exposition des Produits de l'industrie Française. Winnerl received the Croix de la Légion d'Honneur in 1844 and a further gold medal at the Exposition of the same year. He was appointed clockmaker to the Paris Observatory in 1850. For further information on Winnerl, see: Phillip Arnott, Constant Force Chronometer No.1 Attributed to Paul Garnier, Antiquarian Horology, No.1, Vol. 33, September 2011, p.68.