I picked these up the other day for $20. I wouldn't have even looked at the ad for Sony speakers if it weren't for another ad about a month ago for the same speakers that gave me the insight that sony actually made good speakers. The only difference between the ad I bit on and the earlier one was the first guy wanted $600 for his!
These are Sony SS TL-5 speakers. They are American made Transmission Line speakers featuring a dome tweet, 5" mid, 6.5" mid-bass, and a rear firing 8" woofer. Here's more info...
http://www.thevintageknob.org/SONY/sonyvault/SSTL5/SSTL5.html .
These thing actually sound very good! I haven't logged enough time to give a thorough review, but I was immediately impressed. I'm running them on a Proton receiver at the moment, but they definitely need more power, so the next step is a bigger power amp.
The speakers aren't mint by any means. I need to replace the dust caps on the mid-basses. The veneer is pretty shotty. One of the tweeters was pushed in but I was able to remove the diaphragm and push it back into place. I'm thinking about replacing the tweeters anyway with a pair of Vifa dual concentric Polk LSI tweeters. If you know of any sweeter sounding tweets in that price range please let me know. They have to be 3.75" dia.
Here's a pic.