Infinity Column II's

Does anyone have any info on 1976ish Infinity Column II speakers. I have just bought a pair. I can not find any info on them. Do they have EMIT tweeters ? Any info would help.

Thanks Bob
They are listed on this Infinity speaker site:
Wow going way back, and making me feel old, those are Walsh tweeters on the top or it, of Ohm fame. I used to have a pair of 2000AXT's(pretty much a lowboy version) that I used to pop the tweeter on and would have to rewind. Great cabinets, not a bad speaker for the time.