My BIL just picked up a JD 300 for me.
There's some funky hardware on the front that needs to go away.
I'm guessing that was used to hold a snow plow blade.
I got to hear it over the phone - sounds good. Runs and drives.
Has a rattle-can paint job covering some rust. But not entirely unexpected.
Price was within a reasonable range.
Pictures are from my sister's cell phone.