Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

If I may add:
The plaque shown in the third photo posted by Don6698 say "German Engine D.R.P.", quite a common error as DRP is not the abbreviation of a company's name but short for "Deutsches Reich Patent" (i.e.patented in the German Empire; 1877-1945). There was also a "minor" version, the DRGM = Deutsches Reich Gebrauchsmuster", which offered some protection for a certain model oder design.
You will find the DRP on some early Carette engines.