Swiss gold pocket watch made for the Indian market Circa 1900

Gold hunting cased pocket watch 
–
A fine and very rare Swiss, hunting cased, 18K gold pocket watch, made for the Indian market circa 1900. Independently adjustable two time-zones keyless watch with Réaumur Fahrenheit thermometer. Polished, bi-directional slide on the band for setting the hands. Hinged gold cuvette with engine-turned border. White enamel dial with two dials for Railway Time and Calcutta Time, each with radial Roman numerals, outer minute track, subsidiary seconds dial, Réaumur Fahrenheit thermometer sector above calibrated from 20 – 120 degrees. Blued steel spade hands. A frosted gilt movement, 15 jewels, counterpoised straight-line lever escapement, cut bimetallic compensation balance, blued steel Breguet balance spring, index regulator. Dial and movement signed
–
Diameter: 51 mm
–
Signed: Courvoisier Frères  Chaux de Fonds
–
This watch has an interesting and simple mechanism for independently adjusting both pairs of hands. A slide on the band can be moved one way to engage the hand-setting for one dial and then the other way to set the hands of the other dial. This watch is rare in having two time-zones and a thermometer, it was intended for use on the railways, the home station being Calcutta.