I have managed to secure a pair of AR-5's.  They were one owner speakers.  On initial inspection, they seem to be quite good.  The cabinets are very nice, as is the grill cloth.  The woofers and mids work, I'm not sure about the tweeters.  I need to do the battery check on them.  The controls are iffy, no surprise there.  The woofer surrounds are completely shot, also no surprise.  One has holes in it, the other is solid but very fragile.  I'll hook that speaker up and give it an extended listen