Solspeil

Description
Warmth emanates from the surface of this shield and heats the arm of any who hold it. Nothing is known of who crafted the shield, or by what strange sorceries it remains warm on even the coldest of days.

Just some runes in ancient Atlantean, spelling out the name. Equipping this shield gives a boost to cold protection.

Source
The  can be found in Legendary Chests.

Repair
This item can be repaired with a.