Im having trouble finding a resource like the PCGS photograde tool to estimate state quarters...something w/ pictures to estimate the grade Any resources?
Considering all the different designs I doubt you’ll find anything addressing each, but is largely speculation on my part. @cladking
You really need to be familiar with each date and m/m and its specific characteristics. As a rule MS-68 is going to be a clean coin with a decent strike, MS-67 will have very little marking or strike deficiencies, MS-66 will look like a chGem coin. MS-65 will have a little marking or other minor problems. Some coins like the Delaware don't come as nice so get graded to a slightly lower standard while others often come as spectacular Gems in the mint set. Grading even for well established series is more art than science and you need to become familiar with each coin. My experience with most of the states quarters is still somewhat limited.
Choice Gem. State quarters need to be in MS65 grades or higher to be worth anything over face value. And those need to be slabbed. Proof state quarters in clad and silver are fairly inexpensive in graded plastic. As long as you stay with PF69DCAM.