We were Treasure hunting for old silver coins, and rings, and we found a deep military M69 mortar round aka bomb used in WWII! This video is full of silver ring finds colonial copper coins as well ...

a major military conflict from the Second Age. That takes place around the year 1697 of the Second Age. So right now in The Rings of Power, Elrond is about 1755 years old, give or take.