Your eagle eyes were right on the money, they are AR4x speakers - pictures below. The condition was very good, papers attached on the back were complete, wood needs some work - normal scuffing on the top, sides were pretty nice.
I was the first to them, had them in hand, but I actually passed and let another person buy them. Before letting them go we chatted a bit and he knew his stuff, knew his ARs and restoration - rueful smiles they were not AR3s. I was happy that someone would save and restore them and not just use them as bangers for a while and turf them. So I got my vintage fix and let them go to good hands. I love a good deal but have limited space and and will keep looking for something a bit higher up the speaker food chain. Final deal was he bought the 4 for $50 in total. Does my rationalizing still sound credible :-)
Unfortunately, there was not another spec of vintage sound gear in the place. Thanks again to everyone for the ID help. It let me keep my head and not just do another impulse buy.