Hello ~ I hope I'm on the correct board here. I need some information concerning my Dad's gravely. Dad is 90 and no longer is able to cut grass. A distant neighbor approached my sister (who cares for Dad) and offered her $100 for the gravely (we are not advertising a sale, he just approached and made an offer). I just put a new battery in it 3 years ago, it had a complete tune up 3 years ago, and was last used by me 2 years ago. I can't find a website that will tell me the year of the Gravely but I do have what I think is a model number, which is 915164 and it is an LI or an LT. My sister had a difficult time reading the information on it. I know this is highly unusual for someone to ask this on a lawnmower forum but I really don't trust this guy and the sale was unsolicited. Can anyone give me a ballpark number and educated me a bit? Thanks in advance!