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It’s been 50 years since IWC teamed up with Gérald Genta to bring us the Ingenieur SL Ref: 1832, and today, it is celebrating this milestone with two limited editions in 40 & 35mm sizes.

It is hard to believe that when Gérald Genta created the first Ingenieur SL, it essentially was a commercial failure. But that is the thing with icons; in many cases they do not start out that way, especially in the watch world. Fast forward to today, and the Ingenieur is one of the most iconic references in IWC’s collections, and since its re-release in 2023, it has seen a massive amount of success, with many collectors, including myself, gravitating towards the versatile and super wearable Ingenieur.

This week, IWC is celebrating the 50th anniversary of the Ingenieur SL, the original model being the Reference 1832, with two new limited-edition versions of the modern Ingenieur Automatic.

The original Ingenieur SL was introduced by IWC in 1976 and designed by Gérald Genta, who was working at the height of his creative powers during a period when integrated-bracelet luxury sports watches were becoming a new category within Swiss watchmaking. The design was certainly ahead of its time, but it did not immediately connect with buyers. Between 1976 and 1983, IWC produced just 598 examples of the Ingenieur SL, and as IWC explains, their and Gérald Genta’s most brilliant failure.

Talking In Person With CEO of IWC Schaffhausen, Chris Grainger-Herr

Today, of course, the story is very different. The Ingenieur SL has become one of the most sought-after models in IWC’s history, and its design became the blueprint for the modern Ingenieur that was introduced in 2023.

“50 years have passed since my father created the Ingenieur SL, and it amazes me how his work continues to inspire so many people decades later. I am honored to see how IWC is preserving his artistic legacy and building on his iconic design with their new Ingenieur.”

Alexia Genta, daughter of Gérald Genta and co-founder of the Gérald Genta Heritage Association.

A Watch For Any Wrist Size

Coming in two references, a 35mm model and a 40mm model, each of the new 50th anniversary additions is limited to just 1,150 pieces. IWC has kept the same architecture and sizing that we know from the current collection, but rather than simply putting a different colour on the dial, the brand has reimagined it with a vertically brushed silver-plated finish.

The inspiration for the dial actually comes from a lesser-known version of the original Ingenieur SL. While the Reference 1832 is best known for its structured grid dial, IWC also produced a variant with a brushed silver-plated dial, which is what has influenced these new anniversary models.

The usual lightning bolt design with the Ingenieur name is still present, but is accompanied by the number “50” underneath, giving the anniversary editions a subtle reference to the occasion without changing the overall look of the watch. Rhodium-plated hands and applied metal hour markers are filled with Super-LumiNova for readability.

Both watches are made from stainless steel and feature the integrated bracelet that has become such an important part of the modern Ingenieur. The bracelet attaches through its middle links, with IWC paying close attention to the finishing and ergonomics. The 40mm model comes with a fully satin-finished bracelet, while the middle links on the 35mm version are polished, giving the smaller model an elevated look on the wrist. On a personal note, I think the polished centre links work super well.

The familiar Ingenieur bezel is also here, secured to the case with five screws. The bezel itself is satin-finished with polished edges, retaining one of the key visual elements that connects the modern watch back to Genta’s original design.

Two Movements, Two Approaches

The 40mm Ingenieur Automatic 50th Anniversary, Reference IW328910, is powered by IWC’s in-house Calibre 32111. It is an automatic movement beating at 4Hz / 28,800 vph and offers a very useful 120-hour power reserve thanks to its double-pawl winding system. I actually find this movement pretty reliable, and having a 5-day power reserve is fantastic in the real world.

The movement is protected by a soft-iron inner case against magnetic fields, continuing a feature that was also found in the original Ingenieur SL, and one of the key selling points of the watch, that being less susceptible to magnetic fields.

The 35mm has the IWC Calibre 47110, an automatic movement with a 42-hour power reserve, beating at the same 4Hz / 28,800 vph. This version also gets a display caseback, allowing you to see the movement, which is finished with circular graining and Geneva stripes and fitted with a gold-plated oscillating weight. The 35mm doesn’t have the iron core either, but with modern watch materials, this is less of an issue nowadays versus, say, 20-30 years ago.

Initial Thoughts

I think offering both sizes makes a lot of sense for the Ingenieur, particularly given how important wearability has become with the current collection. The 40mm will remain the obvious choice for many collectors such as myself, but the 35mm gives those with smaller wrists, or simply those who prefer a more compact watch, another option without losing the core Ingenieur design. Read Sam’s review of the 35mm 18k rose gold model to get more insight on this.

Since the modern Ingenieur returned in 2023, IWC has steadily expanded the collection across different sizes, materials, dial colours and complications. There are now versions in stainless steel, titanium, 18-karat 5N gold (one of my favourite versions) and ceramic, along with more complicated versions including a perpetual calendar and tourbillon.

For the 50th anniversary, however, IWC has kept things relatively simple. These two watches bring the focus back to the original design, using the brushed silver dial and the familiar Ingenieur architecture rather than adding another complication or dramatically changing the case. And, I will say this: in person, these are very nice-looking watches, and the dial does stand out with the vertical brushing.

Given how successful the modern Ingenieur has become, it feels like a fitting way to celebrate where the collection started. The watch that struggled commercially when it was released in 1976 is now one of the most recognisable designs in IWC’s catalogue, and these two limited editions give collectors another way to appreciate the design that started it all.

References & Specifications

INGENIEUR AUTOMATIC 40 50TH ANNIVERSARY

INGENIEUR AUTOMATIC 35 50TH ANNIVERSARY

Availability: Each is limited to 1,150 pieces worldwide and available through IWC Boutiques or online at IWC.com