IWC Ingenieur Ingenieur SL Automatic Stainless Steel / Silver / Bracelet
Reference IW3505-03
About this watch
The IWC Ingenieur IW3505-03 embodies luxury with its elegant design, robust engineering, and timeless style. This stainless steel watch boasts a polished finish, exuding a sense of sophistication. The silver dial features stick indexes and hands that glide smoothly over the dial, showcasing precision. With a water resistance of 120 meters, this watch is perfect for everyday wear and adventurous outings. At its core lies the IWC caliber 375 movement, based on the reliable ETA 2892 mechanism. This self-winding mechanism ensures durability and accuracy, with a frequency of 28800 vibrations per hour and a power reserve of 42 hours. The IW3505-03 is a piece of horological history, produced between 1983 and 1990 for engineers and scientists who value precision and reliability.
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Key Features
- Elegant stainless steel case
- Polished finish
- Silver dial with stick indexes and hands
- IWC caliber 375 movement
- Water resistance of 120 meters
- Self-winding mechanism with 42-hour power reserve
Specifications
- Brand
- IWC
- Family
- Ingenieur
- Model
- Ingenieur SL Automatic Stainless Steel / Silver / Bracelet
- Reference
- IW3505-03
- Movement
- 375
- Movement Features
-
- Hours, Minutes, Seconds
- Date
- Case
- Stainless Steel 34mm
- Dial Color
- Silver
- Crystal
- Sapphire
- Water Resistance
- 120
Current Listings
![[WTS] IWC Ingenieur Automatic 40 IW328903 Steel Green Grid Dial Box Papers 2025](https://preview.redd.it/w6ppgqmwq4cg1.jpg?width=640&crop=smart&auto=webp&s=39687a5ed0a203d8a2e80cc64a443f49dd44531f)
IWC Ingenieur Automatic 40 IW328903 Steel Green Grid Dial Box Papers 2025
A newer IWC Ingenieur model featuring a beautiful aqua-green grid dial, applied indices, and a color-matched two-digit date wheel. It has a 40mm stainless steel case and an automatic Calibre 32111 movement with a 120-hour power reserve.
- Condition: Excellent condition with light wear on the case and bracelet
- Case size: 40mm
- Material: stainless steel
![[WTS] IWC Ingenieur 3521 Fullset - $7500](https://preview.redd.it/ebpv96u7t3cg1.jpg?width=640&crop=smart&auto=webp&s=50b3a870958d70b687adccd7800fe01619a428ad)
IWC Ingenieur 3521 Fullset - $7500
This listing is for an IWC Ingenieur 3521 watch, which comes with its original box and papers. The watch features a 34mm diameter T dial and hands.
- Condition: unpolished original T dial
- Diameter: 34mm
![[WTS] IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)](https://preview.redd.it/j5x4di1soibg1.jpg?width=640&crop=smart&auto=webp&s=6e40f64156f653cae5a5fd76ec24874bd88fafeb)
IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)
This all-original IWC Ingénieur Ref. IW323902 is a modern classic offered in never polished stainless steel and features a black dial with strong legibility and technical aesthetic.
- Condition: Excellent overall condition, light honest signs of wear
- Movement Service History: professionally serviced in December 2025
- Depth Rating: 30m water resistance
- Bracelet Adjustment Pins: includes original adjustment pins
![[WTS] IWC Ingenieur Aqua Green IW328903](https://preview.redd.it/ral8pdsg17bg1.jpg?width=640&crop=smart&auto=webp&s=d431504619ef3e3fae9fa9be04cdb237ed853cd5)
IWC Ingenieur Aqua Green IW328903
This 40mm Ingenieur features an Aqua Green dial and is in excellent condition, with a flawless crown and glass.
- Condition: 9/10, minor hairlines on middle links
- Warranty expiration date: September 3, 2032
- Accessories included: original box, papers, warranty card
![[WTS] IWC Ingenieur blue dial](https://preview.redd.it/ydqlboj6qyag1.jpg?width=640&crop=smart&auto=webp&s=b1f230ce314346ea8977fdf68ca414a6a57c24b6)
IWC Ingenieur blue dial
A well-maintained IWC Ingenieur with blue dial is available for sale. The watch features a 40mm diameter and comes with box, papers, micro adjust clasp, original butterfly clasp, and extra links.
- Condition: Excellent, minor scratches on micro adjust clasp and links
- Case Diameter: 40mm
- Water Resistance Depth: 100m
- Power Reserve Duration: 120 hours
![[WTS] IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)](https://preview.redd.it/g7lpxnurvp9g1.jpg?width=640&crop=smart&auto=webp&s=849374380fedfb30999937aa75edfdaf8cbe9b40)
IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)
This IWC Ingenieur Automatic 40 is a modern classic in excellent condition. The black dial offers strong legibility and a balanced aesthetic. The watch comes complete with original boxes and papers.
- Condition: Excellent overall condition, with light honest signs of wear
- Case diameter: 40mm
- Water resistance: 3 ATM (30 meters)
- Bracelet: stainless steel with all links
IWC Ingenieur Automatic - IW323902 - Black - Stainless Steel - 39mm - Mint
A pre-owned IWC Ingenieur Automatic in excellent condition, featuring a 39mm black stainless steel case and automatic movement. The watch is accompanied by its original box set, instruction manual, warranty card, and OEM rubber strap.
- Condition: Pre-Owned - Grade: Mint
- Case size: 39mm diameter
- Bracelet type: Stainless Steel
- Dial: Black
IWC Ingenieur Automatic - 40mm - Black Dial - IW328901 ( unworn / 2025 )
This IWC Ingenieur Automatic watch features a 40mm stainless steel case and black dial, coming with all original boxes and papers.
- Condition: unworn
- Case size: 40mm diameter
- Movement: IWC 32111 Calibre
1980's IWC Ingenieur Ref. IW3506 with Box
The IWC Ingenieur Ref. IW3506 is a vintage watch originally launched in 1955 as an anti-magnetic timepiece for engineers, featuring a soft iron inner case and IWC's Caliber 852. The Reference 3506 was introduced in the mid-1980s, offering a more wearable size with refined details like gold hour markers and a graph paper textured dial.
- Condition: Vintage-Good
- Movement: Automatic
- Case Width: 35mm diameter
- Strap Length: 7.50 inches