Found this on the www. Might help. I know nothing about keyboards.

The existing Gulbransen organ is now made by a company in Italy that was
originally owned by a Mr. Piero Crucianelli. The company was (and is) called
"Elka".I think, at this time, that their entire production is occupied with
producing Gulbransen and is distributed and retailed by a large retail
organization in California . The parent corporation, if memory serves, is
The Crystal Corporation.