Odd question I was hoping someone may be able to answer. I purchased this piece for the signed GPC of Jim Bottomley but have always been curious about the picture itself. I am unsure if it is an original or if Lithographs were produced from the original. It measures 16*20. I purchased it framed so unsure what is on the back, but if I need to look for some sort of marking to tell if it is original, I am willing to crack the piece open. Any help someone could provide information about what to look for, it is greatly appreciated.
Here is a picture:
