Those are all very nice 63s. I have only owned 3 1863 seated dollars one ANACS OWH that was a F15 that Rich Uhrich used in has banner picture on the far right of his site after moving it through Rich. One PCGS AU58 OGH that I had to sell to purchase my 1870-CC half, and an NGC58 that is still in my collection. One of my favorite Civil War dated dollars. My personal experience had the 62 as the most difficult to find in nice original condition and then the 61 and 63 were close, but I would probably give second place to the 61 and third to the 63. All of them are hard to find in original toned condition.