‘Then Tuor marvelling saw that on the wall behind the throne were hung a shield and a great hauberk, and a helm and a long sword in a sheath. The hauberk shone as it were wrought of silver untarnished, and the sunbeam gilded it with sparks of gold. But the shield was of a shape strange to Tuor’s eyes, for it was long and tapering; and it’s field was blue, in the midst of it was wrought an emblem of a white swan’s wing. Then Tuor spoke, and his voice rang as a challenge in the roof: “By this token I will take these arms unto myself, and upon myself whatsoever doom they bear.”’
-The Unfinished Tales, of Tuor and his coming to Gondolin.