darkosaric - Hi,
don't sell - just buy new one and keep old one :). I have a bunch of 50mm nikkors, and they are all excellent. You can't get much money for old nikkor-s anyhow.
I agree, 50's are so cheap, small and sharp. Just keep it (unless some dude with a 4/3's adapter will pay obscene amounts to put it on his camera)!