Bernardino Luini (1475-1532), Adoration of the Magi (ca. first quarter of the 16th century).
Image source: Wikimedia Commons. Public domain in the USA (pre-1923).
" ... that generous and courteous Swann who had offered it to me, or to them rather, without seeming any more to be conscious of its value than is, in Luini’s fresco, the charming Mage with the arched nose and fair hair, to whom, it appeared, Swann had at one time been thought to bear a striking resemblance."