1857 Type 3 Gold Dollar For Grading

I'm posting some of the coins I snagged at an estate sale several months ago. It is one of the strangest assortment of coins I've encountered, but there have been some very nice coins in the mix. This isn't one of them, however. At best, it's a badly mauled details common date 1857 Type 3 dollar.

I have several questions here, and the first is authenticity. I hesitate on this one. It is spot on for composition, .900 Au and just under .100 Cu, with trace elements as a small remainder. The weight is squarely within mint tolerance, 1.66 g, about what would be expected for a circulated gold dollar. The reeding looks correct. That said, it is a particularly mushy strike with a surprising amount of Machine Doubling. There is extensive clashing. It obviously had a loop removed, so it did its time as jewelry. There were thousands of counterfeits made in the 1870s-1890s for jewelry purposes, and ironically many of them are 22k (.9167 fine), rather than coin fineness. This could well be a jewelry counterfeit.

The second question is the area beneath the bow. There is something there. To my eyes it is just a die clash, but the shape could suggest a Charlotte mint mark. I have never seen a weak Charlotte mm on a gold dollar, and this would have to be an extremely weak mm. My hunch is just clashing, but I would welcome all opinions on this.

The third question, assuming authenticity, is grade. It obviously is a details coin.

I appreciate the help here!

Here are the whole coin photos.


Here is the area where the loop was attached.

Here is the area beneath the bow.