Swiss gold chronograph with 30 minute counter Circa 1920

Gold watch made for the Société Horlogère, Basel
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A Swiss 18 carat yellow gold hunting cased keyless pocket watch made by Lemania Watch Co. in Vallée de Joux, circa 1920. Two horological complications, a chronograph and a minute counter. Cover and case back are polished. Inside case back engraved in fine cut: Bernard Broggi/Delémont. White enamel dial with suspended Breguet numerals, 30-minute counter at 3 o’clock, subsidiary seconds at 9 and gilded metal Spade hands. A gilded brass movement, going barrel, straight line lever escapement, cut bimetallic compensated balance with poising screws and blued steel hairspring with terminal curve, polished steel index regulator; chronograph work on the top plate. Signature on the cuvette.
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Diameter: 52 mm
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Weight: 94 g
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Signed: Lemania Watch Co.  Vallée de Joux
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Two horological complications:
-1/5 second chronograph, activated by the single olive shaped push piece located on the case band at 12 o’clock, with outer ring divided into 300.
-Half-instantaneous 30-minute counter, subsidiary dial at 3 o’clock.