Seems like a solid upgrade candidate with the black spot on the back. Definitely see an upgrade possibility with this one. Where do you think this one will close at? https://www.ebay.com/itm/1898-1-Morgan-Silver-Dollar-Proof-PR61-PCGS-Secure-Toned/124006765985?hash=item1cdf6115a1%3Ag%3A7XsAAOSwt6hccbnk&LH_Auction=1
I wouldn't think it would go too much higher than it already is ($1276 currently). I think that coin is generally unattractive - very dark toning like that does not appeal to me, especially with spots. Also, coins don't just get graded 61 for no reason. Those pictures are designed to hide whatever problems the coin has. Usually, 19th century proofs in the 60-62 range have quite a few hairlines. No amount of resubmitting is going to hide that or remove that. You might get lucky with a resub and get a 62, but it doesn't look like this coin has a big price jump to 62. I don't think the upgrade is nearly as convincing as you do - but that's the point behind the small and dark pictures!
The PCGS full view seems to support that. Also, given the lighter patch around the black spot, I'd guess someone's already tried to work on it and given up.
This! OP - may I ask why you thought it would be an upgrade candidate? I'm wondering if you're grading it like you would a business strike Morgan and wondering how such a clean looking cheek/fields could be a 61? If so like others have mentioned often it's a sea of hairlines that causes the grade and those aren't going to show clearly on pictures. Grading proofs from pictures isn't wise if you want to buy a proof Morgan I would get one from a trusted dealer whose opinion you can bank on or in person, personally. A nice proof Morgan is beautiful, a hazy, dark one with minimal mirrors riddled with hairlines is not so nice and in hand you can really tell the difference and pick a nice one out.
Purchases of PR61 Morgans typically end in regret. If you're looking for a proof Morgan type coin (not a 78 Rev 79,. 95, 21 Chapman, or legit branch mint proof), don't buy anything below 63 or 64. At that level, there are still attractive coins.
It looks like somebody tried to lift the spot on the reverse. In the old days, that used to be called "improperly cleaned" and got a body bag. Now it gets graded.