Yes, I think heās right. āOne of a pair of stingsā must refer to the two swords taken in the troll lair by Gandalf and Thorin in The Hobbit. Bilbo came away with Sting. But I was initially confused by the reference to the war over the Silmarils. That was the First Age, and I donāt think those blades were forged that far back. After all, in MEPBM, they are +750 pt. combat artifacts, and the real masterpieces, with damage in the +2250 range, all date from the First Age: Gurthang, Ancaruin, Orcruin, Orcrist, etc.
answer is Orcrist, both swords were made in First Age for Turgon but Orcrist was the sword taken by Thorin and laid on his chest in his tomb after he died.