Patek Philippe, model: Ref.3483, steel case three-hand Calatrava, a rare steel version of the 1960s Calatrava, only available in stainless steel, with a limited production. It features a classic 35mm case diameter and a screw-down caseback. It is one of the few dress steel watches of the 1960s with dust and water resistance. Equipped with the legendary Cal.27-SC manual winding movement, Geneva Seal, 18 diamonds, central large seconds hand, and exquisitely polished plates, it is one of the peak representatives of PP manual movements. Original radial silver dial, three-dimensional white gold bar hour markers, sharp and bold lugs, with a strong retro atmosphere. This understated and reserved steel case formal dress combines the attributes of daily wear and antique watch collection. It rarely appears in the circulation market and is a model that seasoned collectors focus on pursuing.