IWC Ingenieur Ingenieur SL Automatic Stainless Steel / Yellow Gold / Black / Bracelet

Reference IW3505-12

IWC Ingenieur SL Automatic Stainless Steel / Yellow Gold / Black / Bracelet

About this watch

The IWC Ingenieur SL Automatic (IW3505-12) is an exquisite timepiece that embodies luxury and functionality. Produced between 1983 and 1990, this watch combines stainless steel and yellow gold for a striking contrast that exudes classic elegance. With its compact size of 34.00 mm and height of just 8.60 mm, the Ingenieur SL is remarkably comfortable on the wrist. The sleek black dial with stick and dot indexes enhances readability while maintaining a minimalist aesthetic. At the heart of this watch is the IWC caliber 375, a self-winding movement that ensures precise timekeeping and reliability. With its impressive water resistance of 120 meters, this watch is suitable for various activities, including swimming or snorkeling. The addition of a date function and comfortable stainless steel bracelet make it a versatile companion for everyday wear. This iconic timepiece showcases IWC's commitment to quality and performance, making it a timeless classic that combines historical significance with modern usability.
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Key Features

  • Timeless Design
  • Reliable Movement (IWC Caliber 375)
  • Good Water Resistance (120 meters)
  • Comfortable Stainless Steel Bracelet

Specifications

Brand
IWC
Family
Ingenieur
Model
Ingenieur SL Automatic Stainless Steel / Yellow Gold / Black / Bracelet
Reference
IW3505-12
Movement
375
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
34mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
120

Current Listings

[WTS] IWC Ingenieur ref. 3508 | 500,000 A/m

IWC Ingenieur ref. 3508 | 500,000 A/m

IWC - 3508 · $7,150
This IWC Ingenieur ref. 3508 is a technically ambitious and underappreciated reference with extraordinary antimagnetic performance, produced in fewer than 1,000 examples between 1989-1991.

  • Condition: Excellent, recently serviced with 1 year warranty
  • Case Diameter: 34mm
  • Case Thickness: 9mm
  • Crystal Type: Sapphire
Posted at
May 28, 2026, 10:28 AM
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[WTS] IWC Ingenieur Automatic 40 Titanium IW328904

IWC Ingenieur Automatic 40 Titanium IW328904

IWC - IW328904 · $12,300
A boutique-only 2025 IWC Ingenieur Automatic 40 in Grade 5 titanium, featuring a sand-blasted and polished case, rhodium 'Grid' dial, and integrated titanium bracelet.

  • Condition: Excellent
  • Case Material: Grade 5 titanium
  • Diameter: 40mm
  • Thickness: 10.7mm
Posted at
May 27, 2026, 10:55 AM
Active
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[WTS] IWC Ingenieur Automatic – Black Ceramic Case & Bracelet – 42mm IW338903 – Complete set

IWC Ingenieur Automatic – Black Ceramic Case & Bracelet – 42mm IW338903 – Complete set

IWC - IW338903 · $17,500
The IWC Ingenieur Automatic 42 Ceramic features a black ceramic case and integrated bracelet, offering exceptional scratch resistance and a strong technical presence.

  • Condition: Mint all around condition
  • Movement: IWC 82110 automatic in-house movement
  • Water resistance: 100m depth rating
  • Dimensions: 42mm diameter
Posted at
May 25, 2026, 1:23 PM
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[WTS] IWC Ingenieur 40mm Full Set from 2025

IWC Ingenieur 40mm Full Set from 2025

IWC - IW328901 · $9,500
  • Condition: Minor scuffs on bezel/case
  • Case Size: 40mm diameter
  • Lug To Lug: <50"
  • Water Resistance: 100m depth rating
Posted at
May 23, 2026, 7:31 PM
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[WTS] IWC Schaffhausen Ingenieur “AMG” full ceramic | 2014 Full set | $3,950 OBO

IWC Schaffhausen Ingenieur “AMG” full ceramic | 2014 Full set | $3,950 OBO

IWC Schaffhausen - IW322503 · $3,950
This 2014 IWC Schaffhausen Ingenieur 'AMG' features a black ceramic bezel and case, inspired by Mercedes AMG disc brakes. The watch has a clean sapphire crystal and comes in its full set with papers and box.

  • Condition: good with minor scratching on the case
  • Case material: full ceramic
  • Case size: 44mm diameter
  • Strap condition: great with little wear
Posted at
May 18, 2026, 4:19 PM
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[WTS] IWC Ingenieur Automatic 42 – Full Ceramic – IW338903 – Complete Set Mint Condition

IWC Ingenieur Automatic 42 – Full Ceramic – IW338903 – Complete Set Mint Condition

IWC - IW338903 · $17,500
The IWC Ingenieur Automatic 42 is a modern take on the Ingenieur line, featuring a full black ceramic case and integrated bracelet with exceptional scratch resistance. The watch has a textured grid dial, bold indices, and signature bezel design giving it a strong technical presence.

  • Condition: Mint Condition
  • Movement: IWC 82110 in-house automatic
  • Water Resistance: 100m / 10 bar
  • Case Size: 42mm diameter
Posted at
May 18, 2026, 2:23 PM
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[WTS] IWC Ingenieur 40 Aqua, Box and Papers, Factory Serviced and unworn since. Full Kit.

IWC Ingenieur 40 Aqua, Box and Papers, Factory Serviced and unworn since. Full Kit.

IWC - Ingenieur 40 Aqua · $9,100
A beautiful IWC Ingenieur 40 Aqua with an amazing dial design that catches the light.

  • Condition: Unworn since IWC service, fantastic condition
  • Box and papers included: true
  • Factory serviced: true
  • Service papers included: true
Posted at
May 17, 2026, 4:01 PM
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[WTS] IWC Ingenieur Automatic 40 Titanium IW328904 — Rhodium Grid Dial — 2025 Full Set

IWC Ingenieur Automatic 40 Titanium IW328904 — Rhodium Grid Dial — 2025 Full Set

IWC - IW328904 · $12,300
This is a 2025 IWC Ingenieur Automatic 40 in Grade 5 titanium, featuring a sand-blasted and polished case, rhodium Grid dial, and integrated titanium bracelet. It has an in-house Calibre 32111 with 120-hour power reserve and anti-magnetic protection.

  • Condition: Excellent
  • Case material: Grade 5 titanium
  • Case dimensions: 40mm x 10.7mm, 45.7mm lug-to-lug
  • Bracelet material: Grade 5 titanium
Posted at
May 16, 2026, 6:27 AM
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IWC Ingenieur Automatic - IW323902 - Black - Stainless Steel - 39mm - Mint

IWC Ingenieur Automatic - IW323902 - Black - Stainless Steel - 39mm - Mint

IWC - IW323902 · $5,495
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
Posted at
Apr 8, 2025, 12:56 AM
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