Because of the value questions, this had to be moved to Dollars & Sense.
You've got a pair of Sapphires and a pair of Titan subwoofers. The Sapphires went through several generations, but I think those are either Sapphire IIs or Sapphire IIIs, probably IIs given the 1991 date. That was probably a $2.5-3K setup when new. At a guess, the entire setup might be worth $700-1000 now if you find somebody who knows Audio Concepts. I used to own a slightly newer (maybe '94-95) version of that setup, which I sold for about $1500 5 years ago. They're very good speakers, and very tube friendly - mine sounded great with a 17.5 W/channel Dynakit ST-35. With proper setup, imaging and midrange are great, and those subs go all the way down.
I still own and use a pair of Sapphire IIILe speakers in our dining room system. They still sound great. Prior to those, I owned the Sapphire IIIs, which looked just like those. When I first got them, they easily displaced B&W 804s as the best speakers I'd heard in my own system.
