Is my Richard Dean Anderson Autograph Real?

[Swifty991]

Hi i purchased this autograph off ebay a few days ago from the seller benjam0101 on ebay.co.uk. The problem with richard dean anderson is he signs it in 3 different ways its either Richard Dean Anders, Rich Anderson or Richard Anderson. Mine says Richard Anderson. The autograph seems to be in a black sharpie and it is slightly raised off the picture so its not a reprint the signature is also straight and not curvey so its not one of those auto pen things. And there seems to be different amount of pressure placed down in different areas of the signature so I believe this is hand signed its just im not sure if its done by Richard Dean Anderson. Iv been looking on the internet and iv found others that look the same as mine Sorry about the quality of the scan but heres a scan of my autograph:


Thank you for your help.

Oh and yes it did come with a c.o.a