IWC PILOT SPITFIRE PERPETUAL CALENDAR CHRONOGRAPH Reference: IW379103. Serial number: 5086992. 18k pink gold case. Anthracite grey dial, highlighted by two counters (seconds, minutes/hours totalizer), day and month indications. Self-winding mechanical movement (calibre 52615). Leather strap on pink gold buckle, signed. Sapphire crystal. Circa 2018. Diameter: 46 mm. Gross weight: 186 g. The watch comes with its case and papers, as well as a leather strap and its pink gold folding clasp signed. An 18k gold wristwatch automatic movement, by IWC. Circa 2018.