I spotted this ad on CraigsList just now. This is not my tractor, don't know anything about it, don't know the seller, I'm simply passing this ad along. In other words, don't shoot the messenger if it doesn't pan out! ,

"Antique Caterpillar Tractor, narrow gauge PV Fifteen going to need full restoration, or it'd make a great lawn art piece. Basically all there except for side covers, seat and drawbar crosspiece. Engine's free, and tracks roll free. Good carburetor, still has intact glass air cleaner bowl. This is a terrific candidate for restoration or running. Has all data plates intact. I've got too many projects, and this one has to go.

$1k OBO, feel free to make me an offer. Trades????"

losangeles.craigslist.org/lgb/grd/394003877.html

I think this tractor was listed on ebay not to long ago.