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IWC
Ingenieur 666A Cal 8531
Price range
$4,250 – $9,575
Too few priced listings for a median
3
active listings
—
tracked variants
Sep 2026
Too few priced listings for a median
| Listing | Posted | Condition | Authenticity | Price ↑ | ||
|---|---|---|---|---|---|---|
 | eBay | 8/10/2026 | Good | Unknown | $4,250 | View on eBay |
 | eBay | 3/27/2026 | Good | Unknown | $9,575 | View on eBay |
 | eBaySold | 8/4/2026 | Good | Unknown | $7,000 | Sold9/9/2026 |
We currently track 3 listings for the IWC Ingenieur 666A Cal 8531, with prices ranging from $4,250 – $9,575, from eBay.
The IWC Ingenieur 666A cal 8531 is a hallmark of Swiss engineering and design, embodying the spirit of the Ingenieur collection known for its robust performance and understated elegance. Crafted in the 1960s, this watch features a stainless steel case that balances durability with a classic aesthetic. The 35mm case houses an automatic movement, the IWC-caliber 8531, renowned for its precision and reliability. The watch presents a clean, silver dial with luminous hour markers and hands, ensuring legibility in various lighting conditions. Its distinctive features include a date complication at 3 o'clock and a characteristic integrated bracelet that enhances comfort and wearability. The Ingenieur line, originally designed for engineers and scientists, reflects a commitment to technical excellence and timeless style. With its minimalist design and high-quality materials, the IWC Ingenieur 666A cal 8531 stands as a versatile timepiece, suitable for both formal and casual occasions. This model runs true to size and is celebrated for its durability, making it a cherished addition for any watch enthusiast.
The IWC Ingenieur 666A Cal 8531 is a pre-owned IWC watch available for purchase across multiple resale platforms. Shop 3 active listings with prices ranging from $4,250 – $9,575. Find this item on eBay. Listings are available in Good condition, so you can choose the quality and price point that suits you.
Current market prices by condition and authenticity, based on active listings.
| Condition | Listings | Price range |
|---|---|---|
| Good | 2 | $4,250 – $9,575avg $6,913 |
| Status | Listings | Price range |
|---|---|---|
| UnknownListings where authentication status is not specified | 2 | $4,250 – $9,575avg $6,913 |
| Marketplace | Listings | Total value |
|---|---|---|
| eBay | 2 | $13.8K |
| Total | 2 | $13.8K |
Listing counts in the condition and platform tables are filtered subsets (listings with a known condition or price). The “active listings” figure at the top of the page reflects all tracked active listings and may be higher.
