Made and signed by GIRARD-PERREGAUX. Solid gauge yellow gold. The front is a glowing gray guilloche enamel. Set with rose-cut diamonds, in a platinum setting,  and with white enamel tracery. On a gorgeous enamel bail, set with rose-cut diamonds. 

Material: 18k Yellow Gold and Platinum Chain

Time Period: c1915

Dimensions: Watch is 1 1/8" in diameter; Chain is 21 inches; 

Inventory # AK00169