The sapphire crystal back of this automatic hour and quarter repeater reveals the richly decorated, rhodium-plated movement with its circular-grained plate and bridges, snailed undercuts, and Côtes de Genève rotor. Other refinements include a Glucydur balance, polished screw heads, circular-grained brass and polished steel. A stainless steel model with circular-brushed guilloché dial, sapphire crystal and crocodile strap, it is waterresistant to 30 m. All rights reserved for the sliding block mechanism and its waterresistance system.