Finally I made it! I just found out a little more about my Unknown Malmsjö Combo Organ. God knows I have been searching for info on it, thought i tried every combination on words that could match on Google. The label on it says Malmsjö but I was pretty sure it was a rebranded Viscount so anything from the obvious "Viscount Combo Organ" to specific parts such as the "Synth Effect" has been Googled with no success. But today I found this post on Infrequent Sound a Belarusian blogg which seems to be about odd gear of any kind.
So today I found out it was called S.Dakota (not a big guess that the S stands for South). Tried to search a little more on Google after finding out. But all I found was some Italian classified ads. Guess I'll get in touch with the guys at Infrequent Sound at first. And then if you as a reader by any chance has some info on the organ don't hesitate to contact me.
During Christmas I took the opportunity to open it up to get rid of some of the noise and tune it properly. I got it in pretty good shape although I really don't think the synth-part is working as it should.
Here's some photos of the different parts on the outside and inside.