Unknown painting or sketch

There is not much i can tell about he painting / sketch.  the overal size is 15 and 20 inch. We have it for almost 20 year in our house. it was given from a friend who is an art dealer to my uncle as a token of appreciation for his service. a Blurry signature by the name of Francis Bac... (the rest are to blurry to read ) was signed under the painting.  i once plan to open the frame to examine if there any more detail but i cancel it until now afraid to damage it. I did research on the name and only come up with two figur by the name of Francis bacon. the painter and the 15th century Philosopher and the father of empiricism. I doubt it was the drawing of francis bacon the painter it doesnt match his style of drawing but then again who knows