An extremely rare, exceptional, and historically important open face yellow gold minute repeating grande sonnerie clock watch with tourbillon, perpetual calendar, and moon phase
Manufacturer: Charles Frodsham
Year: 1917
Movement No: 09649
Material: 18K yellow gold
Calibre: Keyless, three quarter plate, going and strike trains fully jewelled in screwed settings, Nicole Nielsen type-1 three arm one minute tourbillon carriage with lever escapement
Dimensions: 75mm Diameter
Signed: Case London hallmarks for 1917, casemaker initials “HMF” for Harrison Mill Frodsham, dial signed Frodsham, backplate signed “Chas. Frodsham, 27 South Molton St. London, by appointment to the King” with Royal and honor cyphers, numbered 09649 and ADFmsz
Accessories: Associated brass-bound mahogany box
Provenance: Sotheby’s, October 30, 1989, lot 198
Literature: The present clock watch is described in The Frodshams, The Story of a Family of Chronometer Makers, by Vaudrey Mercer, pp. 209 and 210
