Von schweikert TS-210 surrounds?

Anybody have any experience with these surrounds? Someone local to me is selling a pair for $700. I recently obtained some VR-4 GenIIIHse mains and can't even express how much I love them. I am looking now to complete a home theater setup, and was wondering how they sound and if these would pair well with my VR4's The price also seems a little high possibly for 98 vintage speakers with a list price of $1200 back then. Anyone know the approx. street value? any input is greatly appreciated.

Thanks,
Gary