Manx Celtic Triskelion Amulet. The Manx Triskelion is based on the Manx coat of arms, which dates back to the 13th century. The three legs are known in Manx as "Ny Tree Cassyn" (The Coat of arms of the Isle of Man). The triskelion is an ancient symbol, used by the Mycenaeans and the Lycians. This amulet is made of a quality metal material: alloy of tin, covered by antimony and patinated. Size: 2,3 cm.