Platinum & diamond Chronometer no. -

Case: platinum brooch with diamonds Dial: silvered dial, time only, hour and minutes Movement: 2½''', rhodium plated, "L" shaped, "fausses cotes " decoration with Geneva quality marks, Niton ebauche, 18 jewels, straight line lever escapement, fully adjusted cut bimetallic balance, Breguet balance spring. See attachment for a similar L-shape caliber (not belonging to this brooch) Provenance: 1930 - Niton, Geneve 1930 - Golay Fils & Stahl, Geneve 1997 - Antiquorum, Geneve 2000 - Antiquorum, Geneve Antiquorum 9 Jun 1997, est USD 6,500 - 7,500 unsold "Golay Fils & Stahl, Geneve, No. 37795, circa 1920. Very fine and rare platinum diamond and jet-set keyless Art-Deco brooch-watch. C. Double body, the watch hinged on the border of the hexagonal brooch. D. Small square matt silver with Arabic numerals. Blued steel hands. M. 2 1/2''', rhodium plated, "L" shaped, "fausses cotes " decoration with Geneva quality marks, Niton ebauche, 18 jewels, straight line lever escapement, fully adjusted cut bimetallic balance, Breguet balance spring. Signed on the brooch and movement. In very good condition. Dim. 42 x 22 mm. Notes; By the time this brooch-watch was made, only Niton was producing such "L" shaped movements" https://catalog.antiquorum.swiss/en/lots/lot-96-274?browse_all=1&page=1&q=Golay+Fils+%26+Stahl 2000 - Antiquorum 5 Jun 2000 est USD 4,500 - 5,500 unsold "Golay Fils & Stahl, Genève", No. 37795, circa 1920.Very fine and rare platinum diamond and jet-set keyless Art Deco brooch watch. C. Double-body, the watch hinged on the border of the hexagonal brooch. D. Small square matt silver with Arabic numerals. Blued steel hands. M. 2 1/2''', rhodium plated, L shaped, fausses côtes decoration with Geneva quality marks, Niton ebauche, 18 jewels, straight line lever escapement, fully adjusted cut bimetallic balance, Breguet balance spring. Signed on the brooch and movement. Dim. 42 x 22 mm. Notes; By the time this brooch watch was made, only Niton was producing such L-shaped movements. https://catalog.antiquorum.swiss/en/lots/lot-60-70?browse_all=1&page=1&q=Golay+Fils+%26+Stahl An extremely rare and in all probability a Piece-Unique. For other interesting Pieces-Unique please visit the firm's museum collection; https://golayfils.ch/ For information and/or visiting the museum, by Appointment Only. Golay Fils & Stahl, 1 Place des Bergues, 1201 Geneva, Switzerland.