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.
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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 Green F1 “Sonny Hayes” Limited Edition IW328908

IWC Ingenieur Green F1 “Sonny Hayes” Limited Edition IW328908

IWC - IW328908 · $19,000
This IWC Ingenieur Automatic 40 has a unique Green 'Grid'-patterned dial inspired by a bespoke watch from Apple Original Films' movie F1. It's limited to 1000 pieces and has been worn only a few times.

  • Condition: Pre-owned with hairlines on the bracelet
  • Limited edition quantity: 1000
Posted at
Nov 5, 2025, 11:45 AM
Active
[WTS] IWC Ingenieur Chronograph ref. IW3805.01 circa late 1990s

IWC Ingenieur Chronograph ref. IW3805.01 circa late 1990s

IWC - IW3805.01 · $5,450
This is a Neo-vintage gem featuring a tri-compax configuration, tritium dial, and exceptional accuracy—a professional tool watch designed by Gerald Genta.

  • Condition: Minty crisp
  • Movement: Quartz, IWC Cal. 633 JLC
  • Alarm: Unreliable
  • Box papers: No box or papers; appears to be fully linked
Posted at
Nov 4, 2025, 6:34 PM
Active
[WTS] IWC Ingenieur GMT Freshly Serviced by IWC Ref IW324404

IWC Ingenieur GMT Freshly Serviced by IWC Ref IW324404

IWC - IW324404 · $4,450
This is a modern iteration of the IWC Ingenieur GMT, featuring a white dial and blue accents. It has a date function, GMT hand, and a clean layout.

  • Condition: Excellent, serviced by IWC
  • Case size: 43mm diameter
  • Bracelet size adjustment: quick adjust system, fits up to 7.25 inches
Posted at
Nov 3, 2025, 8:45 PM
Active
[WTS] IWC Schaffhausen Ingenieur Automatic 35 black dial, under warranty until May 2033

IWC Schaffhausen Ingenieur Automatic 35 black dial, under warranty until May 2033

This is the black dial, stainless steel, 35mm model of IWC's Ingenieur Automatic watch. It has an incredibly comfortable integrated bracelet and a height of 9.4mm.

  • Condition: Excellent/like new
  • Case Size: 35.1 mm diameter
  • Height: 9.4mm
  • Glass: sapphire crystal with anti-reflective coating
Posted at
Nov 3, 2025, 4:00 PM
Active
[WTS] IWC Ingenieur Aqua Green IW328903

IWC Ingenieur Aqua Green IW328903

IWC - IW328903 · $9,499
This IWC Ingenieur Automatic presents in excellent condition, featuring a striking aqua green dial and modern case design. The set includes a double box, quick-release tool, warranty card, and extended factory warranty coverage.

  • Condition: excellent overall condition with minor surface marks
  • Water resistance: 30m
  • Bracelet dimensions: 20cm long, 24 links
Posted at
Oct 31, 2025, 6:02 PM
Active
[WTS] IWC Ingenieur Automatic Ref. IW323906 — 40 mm - Full Set with Warranty

IWC Ingenieur Automatic Ref. IW323906 — 40 mm - Full Set with Warranty

IWC - IW323906 · $5,750
A modern evolution of the IWC Ingenieur design, this watch features a stainless-steel case, silver dial, and automatic movement. It showcases Gérald Genta's geometric precision and offers a balance between technical robustness and understated elegance.

  • Condition: Excellent overall
  • Case Diameter: 40 mm
  • Thickness: 10 mm
  • Lug To Lug: 50 mm (including end links)
Posted at
Oct 30, 2025, 10:53 PM
Active
[WTS] IWC Ingenieur 3227 Full Set

IWC Ingenieur 3227 Full Set

IWC - 3227-01 · $3,900
A very solid and well-maintained IWC Ingenieur 3227-01 with a large case size of 42mm, featuring deep Genta ties and DNA.

  • Condition: 9+/10
  • Size: 42mm diameter
Posted at
Oct 24, 2025, 6:28 PM
Active