Opinions on Thiel CS2?

I have the opporunity to purchase a pair of Thiel CS2 loudspeakers and wonder what people think of them? I know these were manufactured in 1988 and no modifications or driver changes were made. My main concern is what might need replacing due to age and the parts cost from the factory. I've listened to some of the later Thiel models and was impressed with the sound, but am not sure what to expect with these.

TIA,
Ron