1925-S Buffalo 5c 2 Feather Variety ?

Can we get a full obverse and reverse pic of this one?

Looks promising as a 2 feather.

As far as the grade. I see signs of ED, and a rim bump. What little of the coin I can see, I wouldn't expect XF from it.

Prices you are listing are also full retail. In XF, a more realistic price is $150/$160 for a non variety. For a 2 feather you could expect $225-$300 tops, graded XF. 1925-S is the most common 2 feather and prices have declined for this year as they are very common. Premium prices will be expected for a coin with choice surfaces. For a non variety, well struck, Earlier to mid die states will bring the most premiums as they are tough to come by.

Looks like a 2 feather.

There are several dies for the 25-s. Some being completely smooth with no trace whatsoever. Some I've seen, like yours, the 3rd is completely removed,
but the abraded area is not quite level with the surrounding fields. Still considered a true 2 feather.

The brown you are seeing is surface corrosion. Cannot be removed without further damaging the surfaces. You can try the route of xylene rather than acetone, may help lighten its slightly, if that.

I would leave it be at this point, it already has the appearance of a cleaned coin (based on these images). I've seen plenty of straight graded circulated buffs with small amounts of this type of ED. Yours has too much to make it into a straight graded holder IMO.

F Details, ED for me.

Yes, these were created from over polished dies. They are a major abraded die variety like the 3 leg, 3 1/2 leg, and the missing designer initial. They are however, not on every year/mint. Known, there are a total of 19 true 2F varieties, 20 if you count the 16-S, and 10 2HF varieties. Some of these dates had multiple dies affected, others just one die. 1925-s being one of the most common, having multiple dies.

The likely cause of the overpolishing is due to die clashing, which plagued this series. Some of these clashes were rather pronounced given the amount of striking pressure needed to strike nickel, and happened multiple times during a dies run. To remove said clashes, a significant amount of polishing would have been necessary. One of the more common clashes besides the EPU clash below the chin, is the clash from the back of the bison which is visible on affected dies in the field below the 3rd feather.

As coop pointed out, this 3rd feather is already at a lower relief and would have been more easily affected. Same with the other abraded varieties like the broken neck, floating jaw, broken nose, etc. all happening at lower relief points of the devices.