This is one of 3 examples of Rowena Morrill's original artwork for Keith Parkinson's famous "Guardians" card game, published by FPG, 1996.  I say "famous" because Keith hired practically all of the popular and well-known artists of the day to produce paintings for the game. . . and Rowena (1944-2021)was surely one of them!  These cards were part of the DAGGER ISLE western expansion set, and were painted in oils on Bristol board mounted to foamcore with artist's tape.  This one, depicting the character "Lying Scum"   It is 6.5" x 5.75" and is signed "R" left center of the image.   I am showing the cards for reference - you can easily find examples to purchase online.    And if you buy more than one, I'll refund you 10% on your purchase and combine the shipping.