> It's unlikely that you had 200 metric tons of silver coins stashed away.
I think the grandparent was imagining they were silver certificate dollars[1], not actual silver dollar coins. That said, silver certificate dollars needed to be converted at some point in the past, in 2023 they can't be converted and only have collector value, and $8 million worth would dilute their collector value substantially.
[1]:https://www.investopedia.com/articles/markets-economy/090116...