Besides the rust, the ways look better then my SB16". You do not see the characteristic ridge that you see in a worn SB way. I bet the lead screw would even clean up better then what many of us have. After looking close at the pics, I know I would scarf it up if I had the chance.
I'm not calling it dead yet. I'm thinking it could be easily brought back to life, and likely better shape then my SB16".