IWC Ingenieur 866 "Military" - almost a prototype (?). Anyway a nice example of a .....
IWC | Vintage Ingenieur Automatic Calendar | Ref. 866 | FINETIMEPIECES.COM
IWC Ingenieur 866 AD grau/blau senkrecht gestreiftes Zifferblatt | Watch Rapport
IWC Vintage Ingenieur Ref-866 Stainless Steel Cal-8541B Box Bj-1969
Value Proposition: Silver Sigma IWC 866A Ingenieur | The Hairspring
23947) IWC 866 AD Vintage Ingenieur SS Silver Dial
IWC | REFERENCE 866 INGENIEUR A STAINLESS STEEL AUTOMATIC WRISTWATCH WITH DATE AND BRACELET, CIRCA 1970 | Watches Weekly | New York | 2020 | Sotheby's
The IWC Ingenieur - Dial Variations in Vintage Models: Part 3
IWC - The Watch Auction: One Geneva Lot 196 May 2015 | Phillips
IWC Vintage Ingenieur Ref-866 Stainless Steel Cal-8541B Box Bj-1969
IWC Schaffhausen - Ingenieur - Vintage - Midnight Blue - 866 | WatchUSeek Watch Forums
OHPF - IWC Ingenieur 866 AD Sigma | Omega Forums
MINT IWC Ingenieur Reference 866 Blue Dial — THE WATCH ADVISER
WITHDRAWN - Revised price! IWC ingenieur 866 ad. Remarkable Blue sigma dial. Unpolished and stunning. | Omega Forums
IWC Ingenieur Ref 866 | Watch Rapport
My watch today - IWC 866
IWC Ingenieur 866 AD blaues SIGMA Zifferblatt full set for $12,601 for sale from a Private Seller on Chrono24
