It looks to be from the mid '90s.In the U.S.,it was impossible by then to get a boombox with SW that wasn't specifically designed for SW use. A 2-way design
? It's hard for me to believe a box that small and of that vintage had two actual drivers. Perhaps you could open her up and take a picture of the speakers. It should be really simple and quick to do.Simply lifting the back off would probably expose pretty much everything inside.