IWC Ingenieur SL ref. 3506

IWC Ingenieur SL reference 3506 in stainless steel with yellow gold bezel and crown, powered by an automatic movement. Designed by Gérald Genta, the Ingenieur SL is one of the most architecturally significant and collectible sports watch references of the 1970s and 1980s, and this example in the two material steel and gold configuration with the exceptionally rare graph paper dial stands out as a particularly unusual and desirable variant within the reference. The grey graph paper dial is beautifully preserved, its distinctive grid pattern creating an immediately striking and unconventional appearance that sets this example apart entirely from standard production pieces. The case and bracelet show light scratches consistent with careful wear over the years. Watch only. Brand: IWC Model: Ingenieur SL Reference: 3506 Movement: Automatic Case material: Stainless steel with yellow gold bezel and crown Dial: Grey, graph paper pattern Condition: Good condition, light scratches on case and bracelet Accessories: Watch only Special features: Gérald Genta design, rare graph paper dial, yellow gold bezel and crown, two material configuration