Steel, Silver Dial
Ingenieur 666 AD — Steel, Silver Dial
Undated
The usual steel 666 AD with silver dial, applied indices and dauphine hands, often on a Gay Frères IWC bracelet.
No verified image of this watch yet
Identifying details
- Date
Date display.
- Ingenieur lightning-bolt logo
“Ingenieur” script with the lightning-bolt emblem on the lower dial.
- Soft-iron inner case
Soft-iron inner case and dial forming a cage that shields the movement from magnetic fields.
Variants of 666 AD
Reference overview →| Variant | Production |
|---|---|
| Steel, Silver DialCurrent | Undated |
| Steel, Black Lacquer Dial | Undated |
| Steel, Black Lacquer Dial · Türler Retailer Dial | Undated |
| Yellow Gold | Undated |
Case & movement
- Reference
- 666 AD
- Production
- Undated
- Case material
- Stainless steel
- Case diameter
- 36.5 mm
- Water resistance
- 100 m
- Crystal
- Acrylic (Plexiglas)
- Movement
- Automatic
- Date
- Yes
More specifications (1)
- Caliber
Movement
IWC 8521
Date version of the calibre 852, used in the first 666 AD.
Automatic · 19,800 vph · 21 jewels
IWC 8531
Date version of the 853, 13 lignes, with Breguet hairspring and Pellaton winding; made until 1964.
Automatic · Introduced 1958 · 19,800 vph · 21 jewels · 44 h reserve · Ø 29 mm · 5.6 mm thick