According to the Archives of IWC, the present watch was sold in 1970.
This "Yacht Club" is one of the exceedingly rare examples of the model in white gold with diamond indexes to appear in public. It is furthermore preserved in very good, original overall condition.
Today the name IWC is most associated with the Portuguese or Big Pilot watches, but at one time it was the Yacht Club that defined the brand. Debuted in 1967, the Yacht Club bridged the gap between sport and classic design, becoming one of IWCs best selling watches in its history. The Yacht Club was distinguished by its circular case and integrated lugs that gave it a tonneau-type shape.
Living up to its sporting name, the Yacht Club could gamely keep pace in rough seas without breaking a sweat. Inside the case ticked the reliable automatic calibre 8541 with date display and the Pellaton bi-directional winding system. Adding to its shock resistance, IWC spring-suspended the movement. Since yachting is a wet sport, the Yacht Club also had to be water resistant, and it was to 100 meters in the steel model and 60 meters for the gold through a crown mechanism that had automatic pressure equalization: the seals tightened down as water pressure increased.