The TPGs are *very* forgiving of hairlines on mid-19th century proofs. It was common practice for collectors of the time to give their coins a wipe every once in a while, and their storage methods weren't exactly up to modern standards. If you ever see a 19th century proof graded 61 or 62, I can almost guarantee you that there are hairlines on it. Hairlines are still somewhat accepted on a 63, but they have to be minor. I wouldn't expect to see noticeable hairlines on a 64.
Interesting. Thank you. Someday when the lotto blesses me I will look more towards collecting 19th century proofs. Now how do they know the hairlines happened back then and didn't actually happen more recently. Shouldn't high grade uncirculated examples from the same time period be given the same leniency?
I'm still trying to figure out how ANACS gave that coin CAMEO with that obverse? There doesn't seem to be much contrast on the obverse.