IWC Watches on Twitter: "#VintageWednesday with this 3510 Porsche Design Compass watch. It was launched in 1978 and was the first watch IWC did together with Porsche Design. Its green case is
FS: IWC Porsche Design Kompassuhr Ref. 3510
IWC Porsche Design for $2,224 for sale from a Private Seller on Chrono24