Just trying to go with the theme here I believe we have had allot more people come on to CT in the past 10 years allot of newbies that don’t know the difference so to bring an old thread front and center is always a good idea
In case it hasn't been said before.....if something is designated "1st Strike" you don't know if it was struck early in the minting process...early with the dies....etc. You just know it was minted in the first 30 days of production. Could be on the 29th day with the same dies as Day 1. The appearance may or may not be great.
The first 30 days the dies are still usually somewhat fresh still, so your not getting a run to far down the line, basically just a guide to go by
I really don't think you are getting the whole picture. At 750 coins per minute. Your math means that a fresh die has struck 32,400,000 coins. That is an impossible figure for a set of dies. Let alone being in an early die stage. A circulating coin press strikes 750 coins per minute. The Philadelphia Mint produces 47,250 coins per minute if all of its 63 presses are operational. The Denver Mint makes 40,500 coins per minute with its 54 coin presses.
A set of dies is good from anywhere from a few hundred coins (proofs) to tens of thousands (business strikes).
and Dies typically last, for circulation coinage, roughly 2 days per the third paragraph here. In other older documentation it states from 2-3 days per die for fast, high strike circulation coinage. Although Proof dies are used much, much less and I've read that .. somewhere. .
Of course the Bullion coins are struck more like Proofs, than generic circulation coins per Die Making | U.S. Mint (usmint.gov) per @Pickin and Grinin post .. the paragraphy below what was quoted has and for video/info of Bullion / Proof coins: they have video of San Francisco Proof manufacturing. Much slower then the regular circulation stuff. San Francisco Mint | U.S. Mint (usmint.gov)