It looks off to me. But it seems to be signed with a very thick marker or paint pen. That really takes away the nuance. If it were me, I wouldn't want it. Here is mine from one of his last private signings.
I partially agree with TradeGeek. Although it looks real to me, the thick marker or paint pen throws it off, so, it is not very attractive. I think the main attributes are there enough to lean towards being authentic.