A gem-set watch, by Omega, circa 1930, and a gem-set watch, by Universal Genève, circa 1940


1st: The barrel-shaped dial with Arabic numerals, the bezel set with calibré-cut onyx, emeralds and old brilliant and single-cut diamonds, to a woven bracelet, mounted in white gold, 2nd: The rectangular dial with baton hour markers and Arabic chapters within a domed surround of single-cut diamonds and calibré-cut rubies, on a serpent-link bracelet, diamonds approx. 0.35ct total, 1st: dial signed Omega, 2nd: dial signed Universal Genève, numbered, Swiss assay mark, lengths: 1st 15.3cm, 2nd: 14.8cm (2)