: A gentle prod as no one responded to my question...
: Would anyone be so kind and help me understand why?
: pls check the correct answers:

: ___ 1/ Not much is known about 1930s /or early models so it's
: anyone's guess;
: ___ 2/ No one cares about these early models;
: ___ 3/ Part of the answer was in the question, so who cares?
: ___ 4/ Who's this newcomer and who cares?

: As an optimist, I'm hoping 4/ is not the correct answer...
: Thanks and best regards

Sorry nobody got back to you Sylvie, it's definitely not #4!

In large part, I think it's probably down to your number 1. It's much more difficult to be definitive on these earlier models than on the later watches, a couple of well known examples apart (I'm thinking 2447, the early one not the Carrera).

And we quite often see bits and pieces - the first watch for example has a perfectly good caseback, but the double signed bridge looks wrong and lacks an expected serial number.

The second watch looks more correct.