anon438
429
Good News
Hello student,
I checked some more data and tried to exploit the photos you sent.
Now I'm quite confident it is authentic, because I could spot another ref 4240 with identical dial (print and hour markers) and very close numbers, the watch I found was retailed by Tuerler Swiss.
I have to correct my indication for manufacture of your watch to 1952, it's a very late one.