I think it is a Chestnut burr but I'm not completely sure at first I thought it was elm but as soon as I cut it I changed my mind it is 9" wide and from 1 1/2" to 3 1/2" tall so far it has had one coat of oil and is still wet that is why it is standing on a nail board a lot of the bark just fell of but the rest took about 30min to pick of enjoy personally I love it and may keep it for a while