21mm Super Angulon
What's a 21mm Super Angulon worth these days? I see just about all of the ones on ebay are selling by Photo Arsenal and we all know they inflate prices.
Of the two versions, f4 and f3.4, what are the prices at various conditions?
I'm still into the idea of the ZM 21mm C Biogon but the Super Angulon seems such a well regarded lens.