Gold and Enamel Oval Pendant Watch and Chain

An early 20^th Century French lever pearl and diamond set gold and enamel pendant watch with matching chain.  Circular keyless gilt bar movement with going barrel. Plain cock with polished steel regulator, compensation balance with blue steel overcoil hairspring. Club foot lever escapement, escape pivots with endstones. Small circular signed silvered dial, Arabic numerals, blue steel hands. Gold oval case enamelled on both sides with translucent blue enamel over a decorative engine turned ground.  The middle of the case set with a border of pearls, the winding button at six a pearl.  The watch suspended from a pierced white metal bow set with small diamonds.  Necklace formed from fine chains of white metal and navette shaped narrow gold and enamel links matching the watch.