Dark 'Graph Paper' 3506 IWC Ingenieur SL | The Hairspring
IWC Ingenieur Sl Automatic 3506 / MM Pattern for $4,432 for sale from a Trusted Seller on Chrono24
WTS: IWC Ingenieur 3506 Full Kit | WatchUSeek Watch Forums
IWC INGENIEUR REF 3506 STEEL International Watch Co., Schaffhausen, " Ingenieur Automatic'', case No. 2388290, Ref. 3506. Made circa 1988. Fine and very rare, tonneau-shaped, center-seconds, self- winding, water-resistant, antimagnetic, stainless steel ...
IWC Ingenieur SL Automatic – Analog:Shift
Graph Paper' 3506 IWC Ingenieur SL | The Hairspring
IWC Ingenieur SL 3305 AKA Skinny Ingenieur + Box, Gerald Genta Design IW3305 For Sale at 1stDibs