Some lines drawn in the wet ink with the end of the brush with some corrections in white and three framing lines in pencil.

Rembrandt van Rijn (Dutch, 1606-1669). Seated Old Man, late 1630s. Pen and brown ink, brown wash. 6 7/16 x 5 1/16 in. (16.4 x 12.9 cm).
Fondation Custodia, Collection Frits Lugt, Paris