Art deco sterling enameled compact

Rare art deco sterling silver enameled compact.
Strong art deco cubist enamel pattern.
Circa 1930. Hallmarked "Sterling".
French ? German ?
Excellent condition excepted tiny chip on one of 4 enameled chain links. (visible on last picture).
Compact case shows no damages.
6cm 4.5cm 1cm
REFERENCE: mi2801