The metal G. ladog was mentioned in passing in the Gnomish Lexicon of the 1910s under the entry G. giltha “white metal” (GL/38). It is clearly the cognate of ᴱQ. latúken “tin” as suggested by Christopher Tolkien (LT1A/Tilkal).

Neo-Sindarin: I retained ᴺS. ladog “tin” for purposes of Neo-Sindarin as there are no other alternatives in Tolkien’s later writings.