I recently acquired a vintage Redfield 10X 40mm scope along with a nice Ruger No. 1 rifle in 22-250. Scope appears to be in excellent conditon and has unusually crisp/clear optics. Regardless, I am considering selling or trading it on an adjustable magnification scope such as a 4-12X Leupold or Nikon. Can anyone provide info on what the redfield scope might be worth.

in excellent condition probably in the 125-150 range, depending on how quick you want to move it. It is a very good scope