I have a print in its original frame that has Borin Art Products,1325 S.Ciceso(?) Ave. Chicago, Il (no zip code) stamped on the back. The paper on the back of the frame is brown and very worn. This is an old picture with a village on the water with boats and people and two horses pulling a log out of the water. Looks to be 15th or 16th centry. What would the value be?