This is a courtesy offer before eekbay, a 120mm SMC-M in perfect condition, seemingly untouched by post-manufacture human hands. The additional links are a comparison at f8 to the FA 135mm, both negs pushed through a poor scanner. I admit that scanning makes the test rather pointless, but I can't detect much difference other than what might be grabbed by 15mm more reach. Anyway, KEH has 2 of these for $325 and $286, neither with case. I have the case, and it's the nicest Pentax hard case I've got. This is offered for here $230. It's a spotless sample of an M-lens, and an extremely compact f2.8 180mm equivalent on the dimuitive *istDS. This lens is tidy and tiny.
http://members.cox.net/mark.lindamood/120mm.JPG http://members.cox.net/mark.lindamood/120mmf8.JPG http://members.cox.net/mark.lindamood/135mmf8.JPG
