Up for sale a wonderful Art Deco House of Marchak Paris working miniature vanity clock. The clock has an Art Deco rectangular block case which is made of French. 950 silver by the Parisian silversmith Adolphe Frontin or his sons Henri and Robert. The vanity clock is marked with the Minerva head for. 950 silver and the Frontin mark in a diamond lozenge on the interior of the clock door which reveals its inner workings….