Ref. IW516401 - The Portofino Hand-Wound Moon Phase in stainless steel is a reference to the first Portofino from 1984, which also featured a moon phase complication. The watch is powered by the hand-wound caliber 59800 movement and offers an eight-day power reserve on a single winding. The silver-plated dial, displaying the moon phase, date, small seconds, and power reserve indicator, has a simple and balanced design. The sapphire crystal case back provides a view of the eight-day movement and the plates and bridges with their various decorative finishes. The dark brown alligator leather strap is sourced from the Italian manufacturer Santoni.