Portrait of an unknown man; The subject is turned away from his writing table. He has a book in his right hand; his index finger is between the pages. He is wearing a tie. Under the portrait are signature; historical persons (half-length portrait); writing table; writing desk; Adrianus Johannes Ehnle (mentioned on object); Haarlem; 1829 - 1863; paper; h 555 mm x w 442 mm