Grading coins is a process that helps determine the condition of a coin. The process of grading coins on a 70 point scale was developed by William Sheldon. There are several grades with the best being MS-70, which is perfect. MS stands for Mint State and are usually uncirculated coins. MS coins vary from MS-60 to MS-70 and usually have no blemishes, good strike and color.
The grading scale continues with Extremely Fine- XF, Very Fine- VF, Fine- F, Very Good- VG, Good- G, Almost Good- AG, Fair- Fair and Basal State- Basal.
At the end of scale Basal is considered to have a very low value.