IWC Herrenarmbanduhr Modell Ingenieur Automatik SL, Ref. 3506.1, Schweiz um 1991, Edelstahlgeh. inkl. Gliederband m. Faltschl., Boden, Goldlünette & Goldkrone verschr., emailfarb. Zifferbl. m. aufges. G-Std.- Zeichen, G-Zeiger, zus. Innenschale als Magnetschutz, Werk verg., Kal. 37531, 21 St., kugelgel. Zentralrotor, Ringunr., Flachspir., Incabl., 5 adj., L. ca. 19,5 cm, Etui & Pap. anbei, EZ 2IWC gents wristwatch model Ingenieur self winding SL, reference 3506.1, Switzerland around 1991, stainless steel case including bracelet with deployant clasp, case back, goldbezel and gold crown screwed-down, enamel coloured dial with raised gold hour signs, gold hands, additional movement cover as magnetic protector, movement gold-plated, calibre 37531, 21 jewels, kugelgel. central rotor, flat rim balance, flat hairspring, incablock shock-absorber, 5 times adjusted, length approx. 19,5 cm, box & papers enclosed,condition 2