I'll stick it up on our forum and see if anyone knows. We got a long list of knowledgable old-timers as regulars :)
See! Vitually instant response :)
And some commentary on them in use too!
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Ita A Celestion DC 25 Horn Driver---these were Celestions equivalent of the better known RCF TW series drivers---date back to the late sixties or early seventies---these Celestion versions were not very popular as they did not go up very high and you still had to use tweeters above them--cheers--John.
..and it keeps coming....
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You beat me to it John! They sound rather awful as well,really harsh"squark"..got a brown phenolic diaphramm if i remember.