Portrait of a man in armor Titian (Tiziano Vecellio) (1488/90-1576)

The picture has something of this: armor, knight, sword, man, weapon, warrior, portrait, people, helmet, war, tunic, soldier, skirmish, Viking, mustache, facial hair, beard, shield.
Perhaps it’s a close up of a painting of a man with a beard wearing a suit of armor and holding a piece of paper in one hand and a knife in the other hand.