What Have I Bought?

I saw a pair of large Advent speakers listed on CL by a seller whom I've bought other items from before. The pictures looked like the bullnose version of the speakers, and that's all I needed to know. The pictures showed the speakers to be in almost-mint condition, so I plunked down the money via PayPal and drove the 70 miles to pick them up the following weekend. I was more than pleased when I saw them...even the documentation (2 sheets) on the back of the speakers was in near-mint shape. Gorgeous walnut cabinets, but they weren't the bullnose edition specifically, although they did have a beveled front that is semi-bullnose. I know that Advent produced several versions of the large model and am not sure which one these are. The sound is to die for....flat, uncolored, and unbelievably well-balanced. Doesn't stand out in any particular way, but you just want to keep listening for hours. Anyone that might recognize which model these are please respond. Henry Kloss was a flat-out genius.
@crustycoot -- Sounds like you got high just fine without Hi-Fi.  It was special, high times in the '70's when Brown Columbian with buds no bigger than a penny (and loaded with seeds) hit town to replace the Ditchweed Mexican.  Don't know how many concert tour T-Shirts were baptized with burn holes.
Henry Kloss, who was with AR, KLH (he was the "K") and Advent, later co-founded Cambridge Soundworks.  I used to frequent its factory store in Newton, MA.  I acquired a dozen Cambridge Soundworkds speakers two 12" amplified subwoofers and 3 of their radio/CD players (which sounded much better than the Bose Wave radio at half the price),  One pair of speakers was a copy of the famous KLH 6 that I have to this day. The man had an amazing career and designed some innovative speakers, including the AR 3A, the KLH 6 and the Large Advents.  
Stock Advents sounded great. If you ever have the opportunity to hear a pair that has been given the “magic” treatment by Bill Legall at Millersound you will not believe your ears!
The Large Advent speaker was an outstanding value performer in its day.  Some music lovers even added a second pair and used them is a "Stacked Advents" configuration.  The second pair would sit directly on top of the first, wired in series, but inverted so the tweeters would be in close proximity. The problem with older speakers of this vintage is the flexing surround material around the outside edge of the woofer tends to deteriorate. There is a business in Tulsa Oklahoma that does an outstanding job of rebuilding woofers for very reasonable rates. Let me know and I'll supply you with the details.     
Thanks for all the responses and suggestions on the Large Advents. I
regret waiting so long to pick up a pair, but thought anything priced so cheaply originally couldn't be anything special. We owe a debt of gratitude to the pioneers of audio who had the foresight and integrity to build products that not only performed great, but were built to last.