I got this one when I was a kid. I loved it and played it from dusk til dawn. 
It did have some problems with speed now and then but otherwise it was surprisingly good, and sounds better than many recorders from the same era. This was probably a low-cost machine. It is very light, it is battery operated and it runs at 9.5cm/s. It has no real flywheel, the capstan is driven by a light wheel rim-driven by the motor. This actually works well.
I got this one with it and I thought until now that it was a Luxor recorder, but it is not. I have yet to find out why they used a Luxor power adapter. Was this original or did someone patch them together before I got it?
It did have some problems. First I disconnected the speaker cables at some point and without any clue or a schematic it was not that obvious… But I got it sorted.
Another problem is the capstan and the pinch roller. The capstan was out of alignment and the pinch roller pin was bent. Getting this to work 100% is not easy. It would be much better to have some tool to at least set one of them correct… Now there are at least 4 variables. I got it working well enough for now.
Another problem is the speed… I would like to turn it up a few %. There is a pot on the motor PCB but that does not seem to do anything useful.
If someone happens to have the service manual I would be very grateful.