The coin for sale in an NGC slab is a C-2, R-4 (I think). The C-2 & C-3 use the same rev., but the C-2 has an even arc date with a blunt top 6 and evenly spaced E R T Y. The C-3 has a high 6 almost touching the drapery & the 6 is pointed. The RT is very close at their base.