I didn't buy these, just took the photos. Too many BIG speakers in my inventory forced me to turn down some that would have been fun to try out.
The Achromatic Series, according to THIS AudioKarma post included several models and were produced in the late 1960s to early 1970s. I didn't see a model designation on these. Dig those purple tweeters and cobalt midrange dustcap! Groovy!
Send in your Best Thrift Store Finds to hificollector88 [at] gmail.com and I'll post 'em for ya.