Considering that the US Mint can literally print money, I can’t think of any reason either. I guess it won’t affect inflation as much, but still mass selling it will increase the money supply available to the government.

Sounds like you should pursue a career at NIST so your hobby can align with a profession. They’re all about keeping track of time to extreme precision with atomic and optical clocks.

Only 3 of them exist as far as I’m aware.