I'm not seeing the extremely fine detail on the head of Liberty or the eagle's feathers or breast, which despite the presence of other die markers, leads me to think this is not one of the "special strikes." However without mint records or some other kind of documentation it hard to say what was going on with the manufacture of these "branch mint proofs." Still an exceptional example, from the images.
Based on that link, I am fairly confident that the coin you posted was struck from the dies used to make the other 'proof' coins. I put proof in quotes because it's probably open for debate if any of those coins are true proofs. With that said, I think any other determination would require the coin in hand. Basically you're looking for depth of mirrors, concavity of the fields, squareness of the rims, etc. Stuff that would just be tough to ascertain from the pictures you provided. Either way, wonderful coin and one I would certainly have an expert evaluate in hand. Best of luck!
This is going to seem silly, but that coin isn't a proof until PCGS or NGC says so, and even then it is only speculative.
Not silly, quite a few coins are in the same boat... Breen was pretty liberal in what he called proofs.
I'm not convinced it's a proof, just not crisp enough for me. I am convinced about the existence of branch mint 1875-S proofs though and have seen two very convincing examples. Here is my proof 77 for comparison.
I thought NGC and PCGS had said no to these long ago. I guess I'm wrong. I can see where PCGS has graded 3 that they are calling Special Strikes. What does NGC have to say?
Very neat. And those rims may qualify it as a proof-- but, hey, I ain't no expert on these. But, I would buy it And I (personally) do not like 20 centers.
That is not a proof. It may be a nice prooflike, however. Proofs wouldn't have a die clash like that - and if they did, all of the research and die markers would mention it. That is a significant clash, and would be an easy marker. Hence - not a proof. Also, NGC has designated 1875S as proof before - a search of the Heritage archives turns up a single example (in an NCS slab) designated as Proof.
Maybe, but I'd put the grade at MS-66 tops and this would be a difference of price between a proof and business strike somewhere between 80-100K.
What makes you say that, looks completely natural to me. I'm not trying to question your opinion, but I've been wrong in spotting this a few times and want to see what you are seeing.
It appears splotchy and uneven around the rims, and the magenta to deep blue toning are considered 3rd and 4th cycle toning colors. Its hard to tell with the pictures provided, I just question it and cant be 100% either way. For the age of the coin I would like to see a more steady even toning progression.