German technically interesting pocket watch with two time zones Circa 1900

Pocket watch with magnificently engraved silver case
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A technically interesting pocket watch with two time zones made by chronometer maker Wilhelm Bröcking in Hamburg, Germany, circa 1900. The open faced case of this watch is crafted from silver and is numbered and magnificently engraved. The extremely beautiful dial with gold Arabic minute and hour numerals, a subsidiary second time zone dial with black Roman numerals at twelve o’clock, a subsidiary seconds dial with black Arabic numerals at six o’clock and blued steel hands. The technically interesting movement with two time zones has a lever escapement.
Case and movement have matching numbers, the dial is inscribed with “Observateur Deposé”
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Diameter: 52 mm
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Weight: 122 g
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Signed: W. Bröcking, Hamburg                
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Wilhelm Bröcking
The name Bröcking was highly respected in Hamburg. Johann Wilhelm Hinrich Bröcking founded already in 1830 the watch company Bröcking, which was continued by the son Wilhelm Bröcking after his death in 1862. Since 1883 he was watchmaker of the Seewarte Hamburg and among other things responsible for the release of the time ball, which served the chronometer tuning on the ships. He made pocket and ship chronometers, some of which were submitted to the chronometer examinations of the Deutsche Seewarte. He also built the standard time clock at the Hamburg Stock Exchange, which was in operation until 1972. He died in 1897; the business in Hamburg was continued – last at Jungfernstieg 7 – by his descendants until 1962.