I think this is it, though the one in the original post has non-standard fabric on the speaker grille. It's a Rel Primus, 1941-42, made in Brno, Czech Republic (as it is now).
Googling will bring up information, but
here's a link to Oldradio.cz, where the picture came from, and where you can download circuit diagrams for the two versions (AC only and AC/DC).