Vacheron & Constantin a fine lady's platinum diamond and onyx bracelet watch ref 6668 case 244744 circa 1925, manual winding rectangular movement, 16 jewels with 5 adjustments, hexagonal silvered dial with Arabic numerals, blued steel hands, onyx set bezel, diamond-set case within an integrated bracelet set throughout with round-cut diamonds and onyx accents arranged in a geometric pattern, case and movement signed, length 23 mm, overall length 174 mm, with minor deficiency to some onyx inserts