i know this is probably a long shot but can anyone tell me which make of springs these are?

They came with my old e30 325i sport which had eibach springs, so could be a spare set? They look barely used but the writing has slightly worn off, but they measure 20cm end to end
and how much are they worth? (if they are cheapo, or proper eibach springs in this condition?!)
could do with any help to point me in the right direction
cheers
dave




