IWC Ingenieur Ingenieur 666AD Stainless Steel / Black

Reference 666AD

About this watch

The IWC Ingenieur 666AD is a piece of horological history, produced between 1954 and 1958. Its classic design and robust functionality make it a coveted piece for collectors and admirers alike. The black dial exudes understated sophistication, while the stainless-steel case enhances durability and adds shine without being overly flashy. Powered by the IWC caliber 8521, this automatic movement is a marvel of engineering, keeping accurate time with a power reserve of 42 hours. The Pellaton winding system ensures efficient winding with minimal effort. With a water resistance of up to 100 meters, this watch can handle unexpected rain showers or beach activities. Its elegant aesthetics and historical significance make it a standout choice for those who appreciate the finer things in life without needing to shout about them.
Buy Now on Jomashop
This is an affiliate link

Key Features

  • Stainless Steel Case
  • Plexi Glass Crystal
  • Automatic IWC Caliber 8521 Movement

Specifications

Brand
IWC
Family
Ingenieur
Model
Ingenieur 666AD Stainless Steel / Black
Reference
666AD
Movement
iwc-8521
Movement Features
  • Hours, Minutes, Seconds
Case
Stainless Steel 36.5mm
Dial Color
Black
Crystal
Plexi
Water Resistance
100

Current Listings

[WTS] IWC Ingenieur Automatic 40 IW328904 | Titanium | Grey Grid Dial | Near-Mint Full Set | $12,500 Shipped

IWC Ingenieur Automatic 40 IW328904 | Titanium | Grey Grid Dial | Near-Mint Full Set | $12,500 Shipped

IWC - IW328904 · $12,500
This IWC Ingenieur Automatic 40 is a recent release with a great wrist presence, excellent finishing, and added comfort of titanium. It comes with a full set including boxes, travel case, and other accessories.

  • Condition: Near-mint
  • Case material: Titanium
  • Dial color: Grey Grid
Posted at
Apr 16, 2026, 6:10 PM
Active
[WTS] IWC Ingenieur Automatic 40 IW328904 | Titanium | Near-Mint | Full Set

IWC Ingenieur Automatic 40 IW328904 | Titanium | Near-Mint | Full Set

IWC - IW328904 · $13,250
The IWC Ingenieur Automatic 40 is a modern reinterpretation of the iconic Gerald Genta-inspired integrated sports watch, featuring a titanium case and grey grid dial. It's lightweight, versatile, and powered by IWC’s in-house Calibre 32111.

  • Condition: Near-Mint
  • Case material: Titanium
  • Diameter: 40mm
  • Thickness: 10.8mm
Posted at
Apr 14, 2026, 10:12 PM
Active
[WTS] IWC Ingenieur Automatic 40mm Titanium IW328904 ( unworn / 2025 / box and papers )

IWC Ingenieur Automatic 40mm Titanium IW328904 ( unworn / 2025 / box and papers )

IWC - IW328904 · $14,950
This IWC Ingenieur Automatic is a 40mm grey dial titanium watch with an automatic movement. It comes complete with all original boxes, papers, and tools.

  • Condition: unworn
  • Case size: 40mm diameter
  • Movement type: automatic
Posted at
Apr 14, 2026, 1:26 PM
Active
[WTS] IWC Ingenieur Automatic 40mm Aqua IW328903 ( unworn / 2025 / box and papers )

IWC Ingenieur Automatic 40mm Aqua IW328903 ( unworn / 2025 / box and papers )

IWC - IW328903 · $10,250
Up for sale is an unworn IWC Ingenieur Automatic 40mm Aqua Dial reference # IW328903, complete with all boxes and papers. It features a stainless steel case and the IWC 32111 Calibre Movement.

  • Condition: Unworn
  • Movement: IWC 32111 Calibre Movement
  • Case size: 40mm diameter
  • Depth rating: unknown
Posted at
Apr 14, 2026, 1:20 PM
Active
[WTS] IWC Ingenieur 40 Aqua Dial, Pristine Condition, w/ service papers from IWC and Box

IWC Ingenieur 40 Aqua Dial, Pristine Condition, w/ service papers from IWC and Box

IWC - IW324-001 · $10,500
This is a listing for an IWC Ingenieur 40 Aqua Dial, with service papers from the manufacturer and included box.

  • Condition: Pristine
  • Water resistance: 30 bar
  • Service papers from iwc and box:
Posted at
Apr 10, 2026, 12:01 PM
Active
[WTS] IWC Big Ingenieur Flyback Chronograph – Guilloché Dial – Box & Papers

IWC Big Ingenieur Flyback Chronograph – Guilloché Dial – Box & Papers

IWC - IW378401 · $6,500
A watch for those who want a true chronograph tool with the elegance to double as a statement piece — robust for everyday use, refined for evenings. This timepiece combines heavy-duty engineering with fine watchmaking.

  • Case size: 45.5mm
  • Material: stainless steel
  • Band material: leather
Posted at
Apr 8, 2026, 6:49 PM
Active
[WTS] IWC Ingenieur IW357001 Under Warranty till 2031 $2,600

IWC Ingenieur IW357001 Under Warranty till 2031 $2,600

IWC - IW357001 · $2,600
The IWC Ingenieur IW3570 combines a classic design with modern functionality, featuring a date complication and balanced proportions.

  • Condition: Pre-owned
  • Case Size: 40mm diameter
  • Case Thickness: 10.3mm
  • Lug Width: 20mm
Posted at
Apr 7, 2026, 11:36 AM
Active
[WTS] IWC Ingenieur Automatic 40 IW328904 | Titanium | Near-Mint | Full Set

IWC Ingenieur Automatic 40 IW328904 | Titanium | Near-Mint | Full Set

IWC - IW328904 · $13,250
The IWC Ingenieur Automatic 40 (Ref. IW328904) in titanium with grey grid dial is a modern reinterpretation of the iconic Gerald Genta-inspired integrated sports watch, featuring a lightweight and versatile design with a titanium case and bracelet.

  • Condition: Near-Mint
  • Case material: Titanium
  • Case dimensions: 40mm diameter | 10.8mm thickness
  • Dial color: Grey
Posted at
Apr 6, 2026, 10:26 PM
Active
[WTS] 2024 IWC Ingenieur Automatic 40 Ref. IW328903 Aqua Full Kit

2024 IWC Ingenieur Automatic 40 Ref. IW328903 Aqua Full Kit

IWC - IW328903 · $9,600
A 2024 IWC Ingenieur Automatic 40 Ref. IW328903 Aqua Full Kit is being sold with a clean crystal, pristine dial, and automatic movement running well.

  • Condition: Great condition overall, light signs of wear on stainless steel case and integrated bracelet
  • Case size: 40mm diameter
  • Movement type: Automatic
Posted at
Apr 6, 2026, 9:50 PM
Active