What Are Mint State Coins?

By GovMint :

Mint State coins are uncirculated coins that retain their original condition, appearing much as they did when first minted. A Mint State coin will show no signs of wear from circulation, maintaining its luster and design details These coins are graded on the Sheldon Scale, which ranges from 1 to 70, with the highest grades being between Mint State 60 and Mint State 70. The grading process, conducted by third-party services like Professional Coin Grading Service (PCGS) and Numismatic Guaranty Company (NGC), involves assessing the coin's condition and authenticity before placing it in a protective holder with an informative certification label.

Sources Used:

https://coinweek.com/what-are-mint-state-coins/