IWC INGENIEUR
- Brochure from 1955/56 -

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The ref. 666 in both non-date (A) and date (AD) versions.
The "A" signifies "automatic" and "D" means "date."


The ref. 666 in its 18k incarnations. The ref. "666 A" housed
the c. 852 and the ref. "666 AD" housed the c. 8521.

Describing the wonderful 85x automatic movement.

Explaining the soft iron core and the value of a sealed, anti-magnetic watch.

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