cal. 13.5-320  nickel lever movement free-sprung Gyromax balance 20 jewels adjusted to heat cold isochronism and 5 positions • the concealed silvered dial with applied gold baton indexes • 18k gold case engine-turned bezel the hinged cover set with 7 round-cut emeralds encircled by 54 round-cut diamonds • with an integrated 18k gold woven ribbon-form bracelet further enhanced by 22 round-cut emeralds and 38 round-cut diamonds • case dial bracelet and movement signed