French gold pocket watch with chronograph and tachymeter Circa 1930

Open faced gold chronograph pocket watch
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A French 18 carat yellow gold, open faced, keyless chronograph pocket watch with a 30 minute counter and tachymeter scale, made by Leroy & Fils, Paris, circa 1930. This watch has a gold, round, basin shaped case with a snapback, signed and numbered. It features a silvered, patinated dial with Breguet style Arabic numerals, two vertical counters for 30 minute and seconds indications, a tachymeter scale, 1/5th of a second graduation, a central chronograph second hand, and blued steel Breguet hands. The signed mechanical movement features crown winding, a bimetallic cup balance, micrometric adjustment, and a lever escapement.
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Diameter: 47 mm
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Weight: 65 g
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Signed: LEROY & FILS PARIS