SD3 R Acoustics worth?

So today i found this offer near me. Are those SD3 R Acoustics? And what are they worth nowadays? I only find an active offer for 800€ in bad condition. Couldn't find any sales or much info.

 

SD Acoustics was Steen Doessing, who I don't think never made a bad loudspeaker. He gave up HiFi before the Internet got doing, so there's little about them on-Line. It's also not helped by Steen keeping the same model numbers for several different versions and not distinguishing them with something like MkII, or SD3.2 or whatever.

Steen is still around, but as a very good photographer, not making loudspeakers.

As to value, if they're in good cosmetic condition and work well, I'd guess £250, maybe £300.

S

 

Thank you so much! Also thanks for the Details! Very interesting.