from the generic matching art and [what appears to be] small size it looks like it might be an early convert-a-cab, probably Japanese in origin. but as stated before, better pictures including a full front and side profile would help narrow it down considerably.
and unless Rockola came out with a different cab design than the one i'm used to, it's definitely not (i'm staring at my Fantasy right now and there are similarities but some significant differences too.)