Antique Dutch oil painting portrait study of a boy smoking clay pipe

Antique Dutch oil painting portrait study of a boy smoking clay pipe. Dutch School, circa 1800-50. Unsigned, artist unknown. Oil on panel. Wooden frame (possibly rosewood but can't be absolutely sure). Depicts a boy in hat sitting by the sea smoking a clay pipe, with bellows. Size of frame: 10.75 x 9.75 inches; Size of panel: 8 x 7 inches; Size of front portrait aperture: 7.75 x 6.75 inches. Weight: 332g (allow 2 kg volumetric weight once packed). Good condition for its age.