SWISS. A PINK GOLD, ENAMEL AND ROCK CRYSTAL MYSTERY DRESS WATCH

Details
SWISS. A PINK GOLD, ENAMEL AND ROCK CRYSTAL MYSTERY DRESS WATCH
unsigned, circa 1930

with nickel-finished lever movement, bi-metallic compensation balance, 17 jewels, the clear dial with mechanism hidden behind a black tone central zone, the triangular and square enamel numerals at the outer rim -- 43mm diam.