I started a post on an early ca. 1935 UG Compur Chrono in the UG Sub Forum about two years ago which has an Fab. Suisse dial. I was informed by the experts (esp. @LouS) that this would be original in case the caseback inside and movement also signed Fab. Suisse (which was in my case). So IMHO this should be proof here also. Are there any more informations available ? 👍
It is a mystery why so few dials are marked Fab. Suisse. I don't think anyone will be able to answer this question. I don't doubt the authenticity of this dial though.
I was referring to what had been said and meant that judging by what you can see it's almost impossible to tell what's printed there on this dial, exactly.
I said above that it is "FAB SUISSE" most likely, but judging to be 100% sure this dial is legit here is unconventionally brave IMO.