All good points, but the reason why I am sending in the mercury dimes is because of the confirmation of the errors I spotted, I had purchased them in bulk already pregraded. To fact check myself while getting to the point to know that my grading skills are up to snuff I am starting to form baseline scores outside of those marks independently. I then send the coins in as a way of verification, any coins that comes in my door I look over with a 30 x jewelry loupe and see if anything is odd or strange marks, scratches, die alignment issues dates, and mint marks. If I have anything at all I question, I have others look over them because I am rather new. Sending coins in to get graded is expensive but with the other products i am selling i can afford to pay for missing the mark and learning before i start really self grading the inventory, I do alot of leg work to make sure things are real and that anything I list or sell has been at least vetted or pregraded by people alot more knowledgeable then I am. To add to that any error coins that I am finding, (outside of the ones i already purchased pregraded or vetted.) I am submitting to get graded that are worth around ten dollars intrinsically for the time being.