JEAN LAMBERT-RUCKI (1888-1967) and JEAN DUNAND (1877-1942)

JEAN LAMBERT-RUCKI (1888-1967) and JEAN DUNAND (1877-1942)
A Watercolor Drawing in a Lacquered Frame, circa 1920
frame: 24 3/8 x 20 7/8 in. (61.8 x 53.1 cm.); drawing: 11 x 7 in. (27.9 x 17.8 cm.)
the watercolor signed J. Lambert 20, the backboard branded JEAN DUNAND LAQUEUR