I am trying to determine the age of this watch. I inherited it from someone in Germany. On the dial it says: Gudvell automatic, 25 rubis, shockproof.
Inside seems to be a Förster 197 movement.
I would like to know how old this watch approximately is, and perhaps what it's current worth might be? I am however not interested in selling at this point, just curious.
I had it serviced in the late 80s by a watchmaker. It runs fine and holds good time.
Can anybody give me more information?
Thanks very much in advance,