IWC Ingenieur Ref 3506 men's watch. Box and papers.

IWC Ingenieur Ref 3506 men's watch. Box and papers. Stainless steel / 14K yellow gold. Automatic movement cal. 3753 with very good performance (+6s/d. 268°). White dial with chequered pattern, applied indices and date display. Bezel and crown in 14K yellow gold. IWC bracelet in stainless steel. Good condition with signs of wear. Last revision was in September 2024. Original box, 2 revision proofs from 2007 and 2024 (with exchange parts), IWC velvet case, instructions, service booklet, first purchase invoice, guarantee booklet and guarantee certificate enclosed. Purchased in February 1990 from jeweler Krauß in Crailsheim. Diameter approx. 34 mm without crown. Fits up to approx. 18.5 cm wrist size.