1960s IWC "Ingenieur" Ref.666AD Cal.8531 Rare Black Dial w/Bracelet

Manufacturer IWC
Year of Manufacture 1960s
Reference no. 666AD
Product no. B-9716
IWC, Ingenieur, Ref.666AD, in-house movement cal.8531 powered, rare gilt black dial, with bracelet, circa 1960s. A rare Ingenieur black dial watch, which is often seen with silver dials. It is equipped with IWC automatic movement Cal.8531.
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Item details

Serial no. 1,762,***
Caliber 8531
Movement no. 1,706,***
Movement type Automatic
Material Stainless Steel
Case size 36.5mm
Case type Screw-back,Waterproof
Dial Original
Type of Indices Applied & Luminous
Belt Original (lug width: 18mm)
Evaluation case 93%
Evaluation dial 95%
Evaluation mov 93%
Condition 4.5
Rarity 4.5

Other details

Case: minor scratches and aging, but retains its original shape and volume.

Dial: Slightly aged, but in good condition with no visible scratches or stains.

Movement: no problems with winding. Accuracy is around 20 seconds per day.