We don’t have much information about the regulator COLOMBOMATIC. The beautiful regulator COLOMBO was produced in Switzerland, probably by the Ringli company in Zurich.
Outwardly, it resembles the Royal Mistral of La Sprirotechnique. The nozzle is even thinner. It is also a single stage regulator, with a very elegant and solid internal mechanism.
Reference
1. Frank Werthwein
2. http://tauchen.seveke.de/altes/1herst-kompakt.htm