Unknown Oil Painting, Schaeffer Galleries SF

Oil painting purchased from the Schaeffer Galleries, San Francisco in the 1970s. I inherited paintings from a family member who collected fine art paintings and exclusively dealt with the Schaeffer Galleries for the entire collection. Unfortunately I am unable to identify the painting or the artist, and the identifying records were lost for two of the paintings. The painting depicts an older man with gray hair and a gray beard looking up and to the side. The signature on the painting is "R.A.M."

Fair