IWC Ingenieur SL

About this reference

The IWC Ingenieur SL Reference 1832 was produced between 1976 and approximately 1983. Designed by Gérald Genta, this reference is valued for its place in the "Jumbo" integrated-bracelet era and its anti-magnetic construction, featuring a soft-iron inner cage. It utilizes the in-house caliber 8541B Pellaton automatic movement. The 40mm steel case earned the nickname "Jumbo" due to its dimensions relative to contemporary standards. Production was limited, with estimates suggesting fewer than 600 stainless steel units were manufactured, making it significantly rarer than its peers from the same period. On the secondary market, prices typically range from $25,000 to $45,000 depending on condition and provenance. A notable variant is the "checkerboard" or "graph paper" dial texture, which is a primary identifier for the reference. Rare examples featuring the "IWC" logo at 12 o'clock instead of the full brand name occasionally appear at auction.