Horn of Gondor
Horn carried by Boromir in the Lord of the Rings trilogy, first appearing in The Fellowship of the Ring, published in 1954. It is a family heirloom of the ruling Stewards of Gondor, with a backstory like every other person, place, and thing in the Lord of the Rings.
It is descibed as "a great horn tipped with silver," and is made from the horn of a wild ox.
Boromir had a long sword in fashion like Andúril but of less lineage, and he bore also a shield and his warhorn.
"Loud and clear it sounds in the valleys of the hills," he said, "and then let all the foes of Gondor flee!" Putting it to his lips he blew a blast, and the echoes leapt from rock to rock, and all that heard that voice in Rivendell sprang to their feet.
"Slow should you be to wind that horn again, Boromir," said Elrond, "until you stand once more on the borders of your land, and dire need is on you." "Maybe," said Boromir. "But always I have let my horn cry at setting forth, and though thereafter we may walk in the shadows, I will not go forth as a thief in the night."
The horn is cleaved in twain by orcs in The Two Towers when Boromir is slain. His brother Faramir conveniently finds the pieces washed up on the banks of the river.