A very cute little boy with ringlet curls is the subject of this portrait by the Tonkin studio in San Francisco, California. He is wearing an interesting dark sailor suit and a collar pin. He seems comfortable on his perch atop a piece of furniture. A magnified close up image of this unidentified adorable child can be found below. Herbert Tonkin is the photographer who produced this image and to learn more about him and to view other photographs from his studio, click on the category “Photographer: Tonkin”.
THE CABINET CARD GALLERY 
I do believe that is Little Lord Fauntleroy.