Okay, here is the picture put out so that we can see it.

First thing to consider. The Indian Quarter Eagle is an incuse design. For those who do not know what this is, the image is sunk into the coin versus being raised on the coin.
With that said, wear or circulation is quite different. Strike is also different.
Let us look at the "possible" cleaning.
Look directly below the tail feathers, next to the arrows on the reverse, then directly behind the tail feathers. See the difference in color?
This also appears at the olive branch, the P and L in Pluribus, the eagle feathers near God.
On the Obverse it is near, the 2nd and 3rd stars, 5th and 6th stars, and 8 through 13.
On my first look, I thought jewelry, but the color breaks do not match up with a standard bezel.
Now lets look at grading:
Again with incuse designs, the wear is different. If you remember the Lincoln Cents in the coin grading forum, the grading starts with the design and the way the image faces.
Directly in front of the Indian, there are obvious marks. (probably bag marks). Look at the lines below RTY in Liberty, these are rub lines.
The reverse is what really kills the grade on this coin.
Look at the cross lines below the U and T in united. This coin was slid across a counter or cabinet. There is an obvious line coming from the last A in America. There are also rub marks in front of the right leg of the eagle, above the eagles head, and below the S and T in states.
When and if this coin is ever submitted to a top
TPG, they are going to see a very weak strike, (which translates into less than 63 all by itself) and all the above mentioned marks, and this coin will see a 58 or 60. That is if the coin has not been cleaned. Only Anacs will grade and certify a cleaned coin. The others would more than likely bodybag this one.
However, I am willing to put my money where my mouth is:If this coin will grade at PCGS, I will buy the coin at FULL
GREYSHEET ASK at the grade assigned by PCGS.