Swiss silver centre seconds chronograph lever pocket watch, import hallmarks London 1916, gilt frosted movement, no. 53709, the dial with Roman numerals, minute markers, 25/300 scale, subsidiary constant seconds and thirty minute
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Vintage Pocket Watch Antique Chronograph Valjoux Rare Military - Etsy UK
18ct rose gold hunter case chronograph pocket watch. Made 1897 – Somlo London
Heuer Pocket watch Chronograph with split seconds made for the Ski Club of Great Britain