They look like Pioneer HPM-100 imitations. From my brief Google search of Tensai, I wouldn't expect much from them. It wouldn't surprise me if some of the drivers are fake.
I too did a quick Google search. It doesn't inspire confidence when the same model number comes in, what appears to be, 4 way or 5 way(your choice). I was able to find a picture of the woofers outside of the cabinet. The silver decorative trim around the woofer is part of the stamped woofer basket. The magnets on the woofers appear to be quite undersized.
These may sound good. They may have been purchased from the occupants of a white van. You should listen to them, and like what you hear, before letting any considerable amount of money change hands.
Thank you for the advice, they go for too much money to take the shot.I'll just skip these and wait for a well known good option. For about double the price I can probably get an original pioneer hpm-100, never heard them in person though.
I believe Tensai were part of the Akai group....My father had a Tensai rack system back in the 80's....never had a problem in the 10 yrs or more he owned it.