IWC 503504
IWC, Portuguese series, model: IW503504, rare new model, rose gold Portuguese seven-day calendar perpetual calendar with complex functions. The entire watch is made of 18K rose gold, with a 44.2mm white dial, rose gold engraved hands, super complex functions including full calendar display, small seconds hand at 9 o'clock position, seven-day power reserve indication at 3 o'clock position, equipped with a back-lit in-house new 52850 woodpecker automatic self-winding movement, providing a 168-hour power reserve, commonly known as the "seven-day chain" new pure gold folding clasp!