Is an oil painting (portrait) of an old man by J. Fuller worth anything?

The value of an oil painting by J. Fuller, especially a portrait of an old man, depends on several factors, including the artist’s recognition, the painting's provenance, condition, and market demand. If J. Fuller is a well-known artist with a strong following, the painting could potentially be worth a significant amount. However, if the artist is relatively obscure, the value may be modest. To assess its worth accurately, it's advisable to consult an art appraiser or auction house.