Swiss gold split seconds full hunter chronograph Circa 1890-1900

Unsigned split seconds chronograph, probably Vallée de Joux
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A Swiss, keyless winding full hunter lever pocket watch with split seconds chronograph, circa 1890-1900.
Rhodium plated movement, going barrel, straight line equilibrated lever escapement, cut bimetallic compensated balance with gold poising screws and blued steel hairspring with a terminal curve, index regulator; chronograph work on the top plate; split seconds work mounted under the dial. Round-shaped 18 Carat pink gold polished case. Enamel dial with Roman radial hours, outer minutes/seconds track with Arabic five minutes/seconds numerals, original Breguet-style hands, and two horological complications: – 1/5 second chronograph (activated by the winding crown); – Split seconds (activated by the olive shaped push piece located on the case band at 12 o’clock).
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Diameter: 54 mm
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Unsigned.
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The movement of this quality watch was probably made in the Vallée de Joux, in a workshop of the level of those of: – Louis-Elisée Piguet (1836-1924), Le Brassus (Vallée de Joux); – Emile-Victorin Piguet (1850-1937), Le Sentier (Vallée de Joux). The main plate, under the dial, was scratched with an etching needle 2422.