Raso therm Camerco glass globe

Hi everyone, I'm being offered these lenses, but I've never seen this brand before—though they look appealing. Does anyone know them or know what era they're from?
Cheers from Chile!

 

I have not heard of that brand before, but some of our German members may have.

 

Raso Therm was a brand used by the GDR section of SCHOTT JENAer GLAS GmbH, 07745 Jena, DE for western markets.
I do not know this specific logo.
Perhaps @Jörg Wekenmann is able to provide more information.

Erik

 

Why does nobody uses the search function of this Forum?
Petromax glass globe I.D

Kind regards
Jörg