I have a signed/numbered lithograph. ^74/27 in bottom left, It looks like these initials "pys" in right bottom corner. Fall type foliage in red, yellow, blue, green. Red sky above a castle tower w/2 side house, left has 2 chimnies, right has 3. trees all around it. 4 sillouetes of antlered deer by water. Three together 1 farther away. Is this worth anything? Is there a place in Phoenix AZ that would know?