It doesn't cost anything to list it on Craig's List to see if anyone will bite - just decide how much you want for it, add $25 for those who want to "talk you down" and see what happens.
If nothing comes of that, the other suggestions above are all good ones.
Just make sure you don't run into the problems an Escondido man had with his old tractors
After purchasing two vintage John Deere tractors in July, Brian Masters said he wasn't hit with a code enforcement violation by the City of Escondido until this month.