They were Wharfdale's top-of-the-range speakers in the mid 70's.
Tweeter. I saw a thread on a forum that said these were ribbon tweeters, but I don't think so. How do you make a round ribbon?
Upper mid-range, with felt suspension...
4" mid-range, again with felt suspension.
... and the 10" bass driver, with rubber suspension.
They sound fantastic, and are in really good condition. Speakers of this age generally start to have problems with the suspension breaking up, but these are just great. Sadly they're just too big...so it's off to eBay with them :(