PR 62 (the 62 is just a WAG as we all know proofs are graded by hairlines which are very hard to see in static photos). It has the transitional obverse (recut extra finger but type 1 ribbon ends) and Rev E ( die chip on far right side of EPU scroll). A really interesting R5 variety. Congrats on the acquisition.
Wow. Totally caught off base. The fact that I mentioned 'medalic' in an earlier set of Randy's photogs should have clued me.
OK not too far off. The second set of photos clinched it for me. Someday I hope to have a proof from the 1873-1878 era.
The second set of photos confirmed it was a proof to me as well but I was overly harsh in calling it cleaned (more of a guess). Congrats on adding a Proof Trade Dollar to the collection!
Dang it, I just now saw this thread and was going to guess PR64. Especially the second set of photos screamed proof to me, but I'll never understand proof grading by the TPGs. 61?? An MS61 would be riddled with bag marks.
It's just that proofs are graded by hairlines which can only be seen well by tilting the coin around under a light. A PR61 would have quite a few hairlines some of which can be seen in a head on photo, but trying to grade a proof from a single static photo is hopeless.
From the second set of pictures and the clue "it is straight graded" I could tell it's a proof. In addition, the old PCGS holder makes me believe it would most likely grade a point higher today, so I think @ksparrow was spot on with PR62.