- Page Title
- A historically important and massive yellow gold open-faced keyless one-minute tourbillon, grande sonnerie clock-watch with trip minute repetition, perpetual calendar and moon phases, No. 09572, 1915-16 | Important Watches featuring Exceptional Discoveries: The Olmsted Complications Collection | Watches | Sotheby's
- Brand
- sothebys.com
- Type
- Other
- First Seen
- 11/17/2025
- Last Seen
- 11/21/2025
- Domain
- sothebys.com
- URL
- https://www.sothebys.com/en/buy/auction/2025/important-watches-2/a-historically-important-and-massive-yellow-gold
- Description
- <p><strong>Movement:</strong> two-train frosted gilded three-quarter plate movement, lever escapement mounted on a one-minute tourbillon carriage with Nicole, Nielsen Type I cage, blued steel balance spring with overcoil, highly jewelled, some jewels carried in screwed chatons, striking and repeating on coiled gongs, the backplate signed <em>Chas. Frodsham, 27 South Molton St, London, by appointment to the King, No. 09572 AD</em> <em>fmsz</em></p><p><br></p><p><strong>Dial:</strong> silver guilloché <em>Breguet-style </em>dial, engine-turned <em>à grain d’orges</em>, twin satin finished chapter rings for Roman numerals and pearled minutes, c<em>rémaillère</em> borders, four subsidiary dials with pink gold chapters for day, each month of the 4-year leap cycle, date and subsidiary seconds with aperture for moon phases, the moon phases outlined with the two hemispheres and rectangular panel beneath signed <em>Chas. Frodsham, </em>all hands blued steel</p><p> </p><p><strong>Case:</strong> massive polished 18k yellow gold case, short slide for trip repeat at 4 o’clock, olivette for time setting beside pendant, slide for choice of silent/strike and nibs for calendar/moon correctors concealed beneath front bezel, thief-proof bow, going/striking trains wound by contra-rotation of crown, glazed cuvette, case with <em>London hallmarks for 1915-16</em>, <em>sponsor’s mark HMF for Harrison Mill Frodsham, numbered 09572, </em>bow and pendant further <em>hallmarked </em>for 18k gold</p><p><br></p><p><strong>Signed:</strong> movement and dial signed Charles Frodsham, case stamped HMF for Harrison Mill Frodsham</p><p><br></p><p><strong>Diameter:</strong> 75 mm</p><p><br></p><p><strong>Depth:</strong> 26.5 mm</p><p><br></p><p><br></p><p>Accompanied by fitted leather case with gilt tooling, the inside with Frodsham’s gilt maker’s name and address and purchase invoice from the present owner dated March 1970</p>
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