IWC Ingenieur Automatic 50th Anniversary: 40 mm and 35 mm Editions Mark the Genta SL
The IWC Ingenieur Automatic 50th anniversary editions mark 50 years since Gerald Genta's Ingenieur SL, reference 1832, with two stainless steel watches: the Ingenieur Automatic 40 (IW328910) at US$15,000 and the Ingenieur Automatic 35 (IW324909) at US$12,900 . Each size is limited to 1,150 pieces . The 40 mm runs IWC's manufacture calibre 32111 with a 120-hour power reserve; both swap the modern grid dial for a vertically brushed silver-plated one and replace the lightning bolt with a “50”. They were announced on September 15, 2026.
At a glance
| Detail | Specification |
|---|---|
| References | IW328910 (Ingenieur Automatic 40); IW324909 (Ingenieur Automatic 35) |
| Case | Stainless steel; 40 mm x 10.8 mm and 35 mm x 9.4 mm; five-screw bezel; convex sapphire, anti-reflective both sides |
| Dial | Vertically brushed, silver-plated; “50” below the Ingenieur logo; rhodium-plated hands and applied markers with Super-LumiNova |
| Movement | 40 mm: IWC calibre 32111, 28,800 vph, 21 jewels. 35 mm: calibre 47110, 28,800 vph, 23 jewels |
| Power reserve | 40 mm: 120 hours. 35 mm: 42 hours |
| Water resistance | 10 bar (100 m) |
| Bracelet | Integrated stainless steel bracelet with butterfly folding clasp |
| Production run | 1,150 pieces of each size (2,300 in total) |
| Price (US) | US$15,000 (40 mm); US$12,900 (35 mm) |
| Availability | Announced September 15, 2026; one outlet reports it available now through IWC; other outlets give no dates |
Design: a rare 1970s dial returns
The two watches share the case shape, five-screw bezel and integrated bracelet of the Ingenieur that IWC relaunched in 2023. What changes is the face. Gear Patrol, Monochrome and finews report that the standard collection's grid-textured dial gives way to a vertically brushed, silver-plated dial drawn from a rare late-1970s variant of the original SL, one that was made alongside the better-known grid version. The lightning bolt under the “Ingenieur” name becomes a small “50”.
The case is stainless steel with satin-brushed surfaces and polished facets, with a convex sapphire crystal coated on both sides. The 40 mm measures 10.8 mm thick and the 35 mm 9.4 mm. One outlet, Oracle of Time, lists the 40 mm at 10.7 mm; the others, including Fratello and Time and Watches, say 10.8 mm. Hands and applied hour markers are rhodium plated and filled with Super-LumiNova.
The bracelet is the integrated steel design of the standard line, with a butterfly clasp. On the 40 mm it is mostly satin-brushed, while the 35 mm has polished middle links. Fratello notes that on the 35 mm the date window overlaps the minute track.
Movement: 120 hours in the 40, 42 in the 35
The larger watch is the more technical one. The Ingenieur Automatic 40 uses IWC-manufactured calibre 32111, an automatic with manual winding, a stop-seconds function and a double-pawl winding system. It beats at 28,800 vibrations per hour, has 21 jewels and stores 120 hours, five days, of power. A soft-iron inner case shields it from magnetic fields, a nod to the antimagnetic purpose of the first Ingenieur. The 40 mm has a solid caseback engraved as a limited edition, so the movement is not visible.
The 35 mm uses calibre 47110, also at 28,800 vph, with 23 jewels and a 42-hour reserve. It is shown through a sapphire caseback, with a gold-coloured rotor, circular graining and Geneva stripes. Fratello and Monochrome both say, citing the spec sheet, that it is based on the Cartier 1847 MC. We have not seen IWC state this itself. Luxe.digital notes that neither movement carries chronometer certification.
Both watches show hours, minutes, central seconds and date, and are water resistant to 100 metres. Fratello says the price gap between the sizes is mainly down to the movements.
Heritage: the SL that sold 598 pieces
The original Ingenieur dates to 1955 as an antimagnetic professional watch. The Ingenieur SL, reference 1832, arrived in 1976 in Genta's design: a steel case, a bezel held by five screws, an integrated bracelet and a grid dial. Gear Patrol and Time and Watches report that only 598 were made between 1976 and 1983, and that it was not a commercial success at launch. Collectors later rediscovered it, and Gear Patrol calls it one of IWC's most sought-after vintage models. The anniversary editions therefore celebrate a watch that mostly gained its reputation decades after it left production.
Genta is better known for the Audemars Piguet Royal Oak of 1972 and the Patek Philippe Nautilus of 1976. Monochrome calls the Ingenieur his third integrated design. IWC revived the line in 2023, and finews reports that Genta's widow Evelyne and daughter Alexia, who founded the Gérald Genta Heritage Association, were involved from the earliest stages of that relaunch.
How the IWC Ingenieur Automatic 50th anniversary editions compare
Against the regular Ingenieur Automatic, the changes are cosmetic and numerical rather than mechanical: a different dial, a “50” in place of the bolt, an engraved caseback on the 40 mm and a run of 1,150 per size. Luxe.digital reports that the standard steel 40 mm Ingenieur starts at $13,500, which would put the premium at about $1,500, and attributes it to the silver-plated dial. That figure comes from a single outlet, and we have not confirmed it with IWC. Oracle of Time puts the UK premium at about £1,000.
Among the steel integrated designs it echoes, the Genta pair of the Royal Oak and Nautilus sit in a different price class. Our Nautilus versus Royal Oak comparison covers them, and our report on the Nautilus 50th anniversary shows how another Genta icon is being marked this year. Neither of those is an IWC, so the closer comparison for most buyers is the standard Ingenieur itself.
Pricing, availability and who it is for
Fratello and Gear Patrol list US$15,000 for the 40 mm and US$12,900 for the 35 mm. Prices elsewhere differ by outlet and currency, with Fratello giving EUR 14,800 and 12,900, and Watchonista CHF 13,200 and 11,500, so we quote US dollars only. Gear Patrol says the watches are available now. Luxe.digital reports they are sold through IWC retailers, not by lottery or waitlist, though no outlet gives a delivery schedule. Check IWC or an authorised dealer for local stock.
The 40 mm suits a buyer who wants the five-day reserve and the closest match to the 1976 proportions. The 35 mm is smaller and thinner, and Oracle of Time found it better suited to smaller wrists, though its author preferred the 40. The same reviewer called the price the collection's most contentious feature. A limited run of 1,150 per size is large enough that scarcity is unlikely to be the main reason to buy.
IWC Ingenieur Automatic 50th Anniversary: references and prices
| Model | Reference | Movement | Reserve | Thickness | US price |
|---|---|---|---|---|---|
| Ingenieur Automatic 40 | IW328910 | Calibre 32111 | 120 hours | 10.8 mm | US$15,000 |
| Ingenieur Automatic 35 | IW324909 | Calibre 47110 | 42 hours | 9.4 mm | US$12,900 |
Background
The Ingenieur is one chapter in IWC's long catalogue of tool and pilot watches. Our IWC history hub covers the company, and our Ingenieur history traces the line from the antimagnetic original to the SL. For the designer's other icons, see the history of the Patek Philippe Nautilus and the Audemars Piguet Royal Oak.Sources: Fratello, Gear Patrol, Monochrome, Time and Watches, Oracle of Time, Watchonista, finews and luxe.digital, all retrieved on October 21, 2026. IWC's own product page could not be read directly. Prices are indicative, vary by market and may change.
Frequently Asked Questions
What is the IWC Ingenieur Automatic 50th anniversary edition?
It is a pair of stainless steel limited editions, the Ingenieur Automatic 40 (IW328910) and Ingenieur Automatic 35 (IW324909), marking 50 years of Gerald Genta's Ingenieur SL, reference 1832. Each is limited to 1,150 pieces.
How much do the IWC Ingenieur 50th anniversary watches cost?
Fratello and Gear Patrol list US$15,000 for the 40 mm and US$12,900 for the 35 mm. Other currencies vary by outlet, so check IWC for local pricing.
What movement is in the IWC Ingenieur Automatic 40 50th anniversary?
It uses IWC-manufactured calibre 32111, an automatic with a 120-hour power reserve, 28,800 vph and a soft-iron inner case for magnetic protection.
How many IWC Ingenieur 50th anniversary watches are being made?
IWC limited each size to 1,150 pieces, 2,300 in total. The 40 mm caseback is engraved to mark the limited edition.
How is the 50th anniversary Ingenieur different from the standard Ingenieur Automatic?
It has a vertically brushed silver-plated dial in place of the grid dial and a “50” instead of the lightning bolt. The case, five-screw bezel and bracelet follow the standard line.
Is the original IWC Ingenieur SL rare?
Gear Patrol and Time and Watches report that only 598 were made between 1976 and 1983. It was a weak seller at launch and is now among IWC's most sought-after vintage models.
Who designed the IWC Ingenieur SL?
Gerald Genta designed it in 1976. He also designed the Audemars Piguet Royal Oak and the Patek Philippe Nautilus.
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