An 18ct gold, onyx and diamond-set wristwatch, by Vacheron Constantin

An 18ct gold, onyx and diamond-set wristwatch, by Vacheron Constantin
The gilt oval dial with baton quarters set off-centre within an oval onyx plaque with applied double tendril design decoration with single brilliant-cut diamond accent, to a matching panel bracelet, backwind mechanical movement, London import hallmark 1973, 18.0cm long
Dial signed Vacheron Constantin