IWC 5441 (Pre-owned - Good) — USD 13,999 on eBay

The IWC Portuguese Tourbillon Hand-Wound reference 5441 represents the brand's approach to combining the Portuguese case design with open-worked dial architecture and visible tourbillon complication. This reference distinguishes itself within the Portuguese collection through its skeletonized dial construction, which exposes the mechanical elements beneath. The 43.1mm case is executed in 18k rose gold with a fixed bezel configuration. A sapphire crystal protects the skeletonized dial face, while the manual-winding movement requires hand-winding for operation. The watch carries a 30-meter water resistance rating, positioning it as a dress-oriented timepiece rather than a tool watch. This reference appeals to collectors seeking a Portuguese case format with visible mechanical complexity through the skeletonized dial treatment. The manual-winding movement requires daily interaction, attracting enthusiasts who appreciate the ritual of hand-winding. The rose gold case material and exposed movement architecture position this reference within the luxury segment of IWC's tourbillon offerings.