IWC Ingenieur SL Ref. 3508 – Rare Fourth Generation Sports Elegance
The IWC Ingenieur SL Ref. 3508 represents the fourth generation of the Ingenieur line and captures the late-1980s interpretation of the integrated luxury sports watch perfectly. Produced between 1989 and 1992, this configuration is especially rare, with only 614 pieces made.
Its design combines a tonneau-shaped stainless steel case with an integrated bracelet, creating a strong and cohesive silhouette. Details such as the drilled portholes on the bezel, gold hands, and matching indexes give the watch a refined yet technical appearance.
The flawless deep black dial with the classic IWC signature adds a quiet sophistication to this sporty design, balancing functionality with understated luxury. Inside beats the automatic IWC Cal. 37590, offering reliable performance in a slim and highly wearable case.
A rare and beautifully preserved Ingenieur — combining industrial design, collector relevance, and everyday versatility.
- wrist size in our picture is 18cm circumference -
DIAL:
- original never touched black dial in flawless condition
- original hands and crown
BRACELET & CLASP:
- original IWC stainless steel bracelet with no stretch is fitting up to 20 cm wrist size / 3 mm thick
- original IWC stainless steel clasp
CASE:
- great overall condition, showing minor traces of wear
- 3- body stainless steel case with screw-down case back
- 34 mm (without crown) / 40 mm (lug-to-lug) / 23 mm (between lugs) / 8.8 mm thick
- year: 1989-1992
- reference: 3508
- total weight: 113 g
MOVEMENT:
- IWC Cal. 37590 - automatic
- 21 jewels, 28800 A/h, 42 hours power reserve
- professionally serviced 05/2026
- +8 sec/d / 270°