The most widely recognized coin grading system is the Professional Coin Grading Service (PCGS), which uses a numerical scale from 1 to 70, with 70 being the highest.
Here are some common grading terms and their corresponding PCGS grades:
* PR65 is not a valid grade in the PCGS system.
* MS65 stands for Mint State 65 and indicates a coin in excellent condition with minimal wear.
* AU58 stands for About Uncirculated 58 and indicates a coin with slight wear.
If you're looking to learn more about coin grading, I recommend visiting the PCGS website or consulting a reputable coin dealer.