[Arran]

I would take a guess at around 1958 or so, since the dial markings are in English, and it has an EM-80/81 style magic eye tube, the kind with a fan pattern. The older West German imports had German writing on the dial, a larger magic eye, and sometimes even had the odd rimlock based tube. No offense skip but the cabinet on that set is kind of on the cheap side, the bottom at least is made out of particleboard. It also looks like someone shot at the dial with a B.B gun. I looked on an Italian site that has a lot of German radio schematics posted, but alas they don't have an AJA listed, AEG, but not AJA, I have a feeling that AJA must have been an off brand aimed at building sets for export.
Regards
Arran