Acquisition
Dropped by a Pirate Captain in Headwaters of Harstrad and a Pirate Captain at Haknir's Shoal.
Quest
It is required for the quest Deathbrand to locate the four ancient chests, each containing a piece of Deathbrand armor, scattered across Solstheim.
Map Location
Headwaters of Harstrad
Haknir's Shoal
Treasure Location
See Deathbrand Armor, Deathbrand Boots, Deathbrand Gauntlets, and Deathbrand Helm for info on the locations of the ancient chests.