Vintage Speaker Choice

EBM, this potential purchase is solely to complete a vintage system that is more a visual than one I will be listening to consistently. That said I want the best sound possible from these oldsters so that's why I'm asking. AKG, Yamaha CA810 integrated, Yamaha TC 520 cassette deck, Yamaha CT 810 tuner and a Yamaha disc changer CD player. This would all be moot if I hadn't made one of the biggest audio related blunders of my life some years back. Too painful to mention right now...

Thanks, this "vintage museum system" as if taken to calling it is actually system #3. Been treating myself in retirement. I've got  new Wharfedale 225's in system #2. 

Hi all and thanks for all the responses. I ended up buying The Advents. They are in wonderful shape both functionally and cosmetically. Sound great with my Yamaha CA 810. The seller actually had four and I ended up going for all of them when I read
about how stacking this speaker was so popular, So I have a new question. Most people seemed to physically stack them on top of one another but how about placing them side by side?  Which is better? I will test myself but have no stands at hand to get the best comparison. Thanks.   

I did stack them as suggested with the top one upside down. I'm very satisfied for how old they  and my Yamaha Integrated Amp are. My vintage Yamaha table is sounding good too. I'm using thin and old Monster Cable with bare wire on both ends. Was wondering if some better cable with pins on the amp and spades on the speaker end would be worth doing? Any suggestions would be appreciated.