Longines. A fine and unusual silver openface keyless lever deck watch with up and down indicator and Longines patented mobile stud carrier

SIGNED LONGINES, NO. 1927924, CIRCA 1922

細節

Longines. A fine and unusual silver openface keyless lever deck watch with up and down indicator and Longines patented mobile stud carrier
Signed Longines, No. 1927924, circa 1922
Cal. 24.99 24''' gilt-finished lever movement numbered twice, 21 jewels, screwed gold chatons, the cage-type three arm mobile stud carrier with fine-tooth regulator, large bimetallic compensation balance with gold poising screws, silver cuvette, the silvered dial with Arabic numerals, blued steel pear hands, fan-shaped up and down indicator, sunk subsidiary seconds, in large circular case with engraved inscription US Navy 1927924 to the hinged back, gold crown, case numbered, cuvette and movement signed and numbered, dial signed
67 mm. diam.

拍品專文

According to the Archives of Longines, the present watch was sold in 1922. It is fitted with Longines' patented "piton mobile" or mobile stud carrier developed by Joseph Brun, Swiss Patent No. 27416, allowing the optimal adjusting of the movement. It is delivered with a photocopy of the "Exposé d'Invention" of the Swiss Federal Office of Intellectual Property explaining the functioning of the device.