How Did This One Get A Clean Grade?

I can't see them as die polishing lines; by nature, those should be heaviest adjacent to the devices whereas here they're missing by the devices. It's definitely postmint scratching of some sort, and the only thing I can think of is that the TPG decided "handling" did not equate to "circulating."

I just can not see how it could have been cac'd if it that bad? I own no slabbed coins so I am confused how two major companies would pass if it were just cleaned? Probably me being naive.

Coins in the 19th and early part of the 20th century were many times stored in coin cabinets and/or coarse paper envelopes. When coins were shown to visitors, they were often handled properly by the edges. In addition, most collectors at the time wanted their silver coins to be white so many were likely dipped in chemicals like potassium cyanide and wiped with cloths soaked in other chemicals. Given the sliding around in coin cabinets and envelopes, improper handing, cleaning, and lack of contact with other coins, one can see that hairlines are probably the most common impairments found on proofs. Marks are to business strikes as hairlines are to proofs.

The coin over 120 years old and is mostly white. It probably has been cleaned but I think it would be market acceptable. The luster doesn't seem to suggest a market unacceptable cleaning and the hairlines(though numerous)don't look excessive enough to warrant a details grade. I don't see any signs of wear on the high points. There are a number of hairlines, which like marks on business strikes, is going to limit it to the low 60's. Overall, I think it is fairly graded.

with Conder101 except the 61 grade is spot on I think the old 60 grade went out a few years ago at PCGS and NGC, hardly ever see MS or PR 60 grades just 61/62/63 etc.

No wear just hairlines from improper handling over the years. The CAC just means it is solid for the grade given, nothing more nothing less. The Green bean is not meant ot add value only to say independent reviewers agree with the grade assigned by the TPG.

I also agree with the "61" grading. Proof surfaces are fragile and hair line on them are caused by some of the issues mentioned above not circulation or cleaning so say. I often find coins graded in 60, 61 and 62 are in some way unattractive and I prefer a higher grade or for ms coins even a Well struck AU will have better eye appeal than some MS 61 coins.