Handwritten signature 'Raoul Lachenal ". Second son of Edmond Lachenal (1855-1930), Raoul (1885-1956) was a pupil of the active family workshop since 1911, he participated in Fairs decorators since 1920 and received the Gold Medal at the Salon of French artists , the same year.
A slight lack of enamel at a location on top of the circumference (see photo)