I agree, at least from what I see in the pictures.
I suggest two things....
One is to visit Coppercoins.com . From main page click the die variety search on left side top. put in the year in the top year block. Check San Francisco in this case and if you wish, at the bottom you can refine the search to Mint Mark varieties. This should show coins that have been found and documented the variety of the Mintmark and any "markers" or things to look for on the coin in addition to the mint mark issue.
What you may want to do, and its totally up to you, is find a small medium stiffness brush and LIGHTLY run it over the coin near the date to see if that debris will fall off.
I use different type brushes, from a soft toothbrush, unused shoe polishing brush, paint brushes to name a few.
My last suggestion is this. Look at how wide and general thickness of the bottom of the "S".... now follow that thickness up toward the top of the mintmark. It Typically should stay about the same thickness. Any significant Increase in deviation may indicate an issue with the mint mark. Unfortunately looks the same through most of the mintmark, and the top of the coin had a bag mark or PMD (post mint damage) to it. I will admit I haven't dug through coppercoins.com to look for you, but I personally don't have the time to do all the research on most of comments on other people's finds. = )
I hope this helps.
I suggest two things....
One is to visit Coppercoins.com . From main page click the die variety search on left side top. put in the year in the top year block. Check San Francisco in this case and if you wish, at the bottom you can refine the search to Mint Mark varieties. This should show coins that have been found and documented the variety of the Mintmark and any "markers" or things to look for on the coin in addition to the mint mark issue.
What you may want to do, and its totally up to you, is find a small medium stiffness brush and LIGHTLY run it over the coin near the date to see if that debris will fall off.
I use different type brushes, from a soft toothbrush, unused shoe polishing brush, paint brushes to name a few.
My last suggestion is this. Look at how wide and general thickness of the bottom of the "S".... now follow that thickness up toward the top of the mintmark. It Typically should stay about the same thickness. Any significant Increase in deviation may indicate an issue with the mint mark. Unfortunately looks the same through most of the mintmark, and the top of the coin had a bag mark or PMD (post mint damage) to it. I will admit I haven't dug through coppercoins.com to look for you, but I personally don't have the time to do all the research on most of comments on other people's finds. = )
I hope this helps.
























