A fine lady's gold and diamond tonneau wristwatch with bracelet, Franck Muller, 'Chronometro', no. 39, ref. 1752 S6 D, circa 1999

18k, circular nickel lever movement, 17 jewels, glucydur balance, silvered engine-turned dial with polished chapter ring, tumbling roman numerals, subsidiary seconds, tonneau water-resistant-type case with the bezel enhanced by 157 full-cut diamonds, approximate total diamond weight 1.90 cts., case, dial and movement signed, with 18k gold Franck Muller bracelet and double deployant clasp, accompanied by Franck Muller wood box.