I never heard of them. Sounds like they could be from the post Jensen, Recoton period. Any photos?
Edit: I did a Google search and there are several posts in AK and other forums on these. I assumed you already did this. Search first, ask questions later.
They appear to be Jensen Advents, which is not necessarily a bad thing. However, at the asking price, I don't think I'd grab them. They look rather nice. I have no idea what they sound like. Advent never was one to post specs on their speakers, at least in the pre-Jensen period.
I found another post on the web that stated they were $299 each brand new and the poster bought them at closeout for half of that.