The OP's pictures are not great. If you look at the NGC pictures, you'll see that it appears to have pretty decent luster. I'm still not 100% convinced of 53, but I think AU-50 might be the right grade: https://www.ngccoin.com/certlookup/5774657-001/53/ However, the color is too pale for me. It looks to have been dipped or cleaned, albeit "market acceptable."