Oil on canvas, 80cm by 64cm.
This is a copy of a portrait by Hanneman in a private collection.
It is signed and dated 1657 and traditionally identified as the philosopher Thomas Hobbes (1588-1679).
Hanneman, who was born in the Hague, was much influenced by his contemporary Sir Anthony van Dyck (1599-1641), and may have worked in his studio at some time.
He is best known for his court portraits of Dutch and English nobility and painted many of the Royalists who had gone into exile at the Hague after the English Civil War.