Portrait of Rikyū (?)

Tan-colored rectangular artwork with slightly darker tan border. A seated man wearing a black robe and a light-colored hat on his head. The man has a light-colored robe underneath and a dark robe over it. The man sits on the floor with his legs tucked under him. The man's face is turned to the left. The man is middle-aged or older with an expression. There are three lines drawn on the man's neck. A rectangular object with a handle and a tassel on the left. The object sits on the floor behind the man. A color scale at the bottom. Japanese characters on the right side. A circular red seal on the right side.