I have seen PSA/DNA get Michael’s signature wrong from time to time. I believe this is a rushed example of his signature. If this was signed by Michael, it was probably done sometime in the early to mid-2000’s. A couple of things to note that are good about the signature: There is no smudging on the signature which is a good sign as Michael held a sharpie or pen at the top and the ‘M’ and ‘N’ show sharp lines.