A gilt metal open faced keyless lever sector watch with jump hours, Swiss, circa 1910,

细节
A gilt metal open faced keyless lever sector watch with jump hours, Swiss, circa 1910,
engine turned gilt dial signed Cigarrillos Excelsior, semi-circular Arabic minute sector, subsidiary seconds, hour aperture, nickel plated damascened movement jewelled to the third, compensation balance, metal cuvette, engine turned case with vacant cartouche, diameter 50mm.