Need help with a beautiful silver watch from the 20s/30s

Hi!
I picked this up at a flea market today.
I dont know much about, and are counting on you guys.

As seen from the photos all the hallmarks are swiss and other than the "MLB" in the caseback the watch is unmarked.
The case is ca. 32mm and Im guessing the engraving isnt original to the watch?
There is a number on the movement (30-something?) but it doesnt tell me much.
Thats about all I know.
Can any of you guys enlighten me? 😀

wow beautiful

The caseback appears to have a correct Swiss mark for 80% silver and a German stamp - the crescent and crown. All that is from this site http://www.vintagewatchstraps.com/swisshallmarks.php More than that I can't say.

Mikrolisk indicates that the manufacture of the case was Maeder-Leschot SA. It also gives a date of 1927 for the registration of the trademark. Though this information may be incomplete, it gives you a possible terminus post quem. By 1934 this responsibility mark would have been replaced by more standardised Poinçons de Maître of a numbered hammer silhouette, so that gives you a terminus ante quem.

If there is no manufacturers' mark under the balance, there may well be one on the dial side of the movement.

In case anyone is interested, the engraving reminded me of this video, that was posted a few months back, showing the engraving process (on steel rather than silver, but the principle is the same). Apologies, but I can't find the original post.

Thanks for the response guys!
For those who are curious this is what I found:
- As already stated by @Fialetti the case was produced by Maeder-Leschot SA in the late 20s/ealry 30s.
- The movement looks to be a A. Schild 168-movement (see picture for comparison).

Thats about all i know 😀