Kent Hagerman Prints

I picked up these prints a couple weeks ago at an auction. I paid $5.00 for each one. They are signed in pencil Kent Hagerman.. one is titled Glen Garry and the other is Syrup Making.

I was looking to find information on his prints.. where multiples done or just one signed piece, if multiple how can you tell which one is the original? I saw online a piece he did called Surf fishing.. one on a art site for $650.00 in perfect condition and one on Ebay for $145.00. The one on Ebay had some damage to the print..
Thanks for looking