Ingenieur 666 ?

I have an Ingenieur from 1962 with cal. 853 , is this an 666 modell?
how can I identifie a 666?

Could be, in terms of year produced, please simply post a picture here or search the internet. It's a rather distinct model.

Best, B.

To me it looks like the real 666 with a lot of Patina. Big congratulations. Let it have a spa treatment and it will be as beautiful as new.

To be a genuine Inge from the era, it should have a serial number on the case
between the lugs. Also, if genuine, I hope the inner soft metal cover on the
movement is still there - I have seen people sell "Ingenieurs" of the era
without it, not pointing out that something is missing. Also, there are
similar genuine 853 automatics from the era being sold as Ingenieurs, when in
fact they are not. Putting the text on the dial and getting it to look right
is easily worth doing for a crook because the price hike from a regular
automatic to Inge is thousands.