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

IWC Ingenieur Black Ceramic Bezel Ref IW323401 w/ Multipe Straps NEW YEAR’S SPECIAL JUST $2895!

IWC - IW323401 · $2,895

This is a modern iteration of IWC's anti-magnetic classic, the Ingenieur, featuring a black tapisserie style dial and ceramic bezel.

Condition: Mint condition
Case Diameter: 44mm
Movement Type: Automatic cal 80111
Crystal Type: Sapphire crystal

Posted at

Dec 31, 2025, 5:52 PM

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IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)

IWC - IW323902 · $10,850

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

Posted at

Dec 27, 2025, 4:39 AM

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IWC Ingenieur Aqua Green IW328903

IWC - IW328903 · $8,950

The watch features a beautiful Aqua Green dial and is in excellent condition, with only minor hairlines on the middle links.

Condition: 9/10, minor hairlines on middle links
Case material: polished steel
Warranty status: active until September 3, 2032

Posted at

Dec 25, 2025, 11:13 AM

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IWC Ingenieur Chronograph L.E. 1 out of 750 In-house Mvmt IW380702 $3,550

IWC - IW380702 · $3,550

This IWC Ingenieur Chronograph Edition 'Rudolf Caracciola' is a limited edition of 750 pieces, featuring an in-house movement and a functional instrument look.

Condition: Pre-owned with minor scratches
Movement: Calibre 69370 with 46 hour power reserve
Water resistance: 60m depth rating
Case size: 42mm diameter

Posted at

Dec 19, 2025, 11:10 AM

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IWC Ingenieur 40 Aqua Dial 2025 Complete Set

IWC - IW328903 · $9,150

This listing features the highly sought-after IWC Ingenieur Aqua Dial, a masterpiece of watchmaking with incredible finishing work and Genta-designed heritage.

Condition: Incredible Preowned Condition
Case size: 40mm diameter
Dial color: Aqua
Power reserve: 120 hours

Posted at

Dec 18, 2025, 10:18 AM

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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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IWC Ingenieur Automatic - 40mm - Black Dial - IW328901 ( unworn / 2025 )

IWC - IW328901 · $9,995

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

Posted at

Mar 28, 2025, 3:41 PM

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1980's IWC Ingenieur Ref. IW3506 with Box

IWC - IW3506 · $5,950

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

Posted at

Mar 27, 2025, 1:34 PM

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