If you are talking about The Stallions lithograph with two white horses and two brown horses and the sea in the background, probably $160 US Dollars is a good starting point since one has recently sold at auction for this price. Other of his horse lithographs have sold for as little as $40 US Dollars. Of course the condition and size of the print and frame have a lot to do with the value as do the time and place you choose to sell them. If you are talking about an original painting then the value coud potentially be up into the thousands again depending on condition and size and if you find the right buyer or auction house.
