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Message:: [QUOTE="Jaelus, post: 2962088, member: 46237"]I like your chart, but I think of it a bit differently, and I would add in AU55 and AU58 to make it interesting. I get that you're just showing the MS grades, but there is overlap there. AU58s have a broad range of eye appeal equivalent to up to around MS65. MS60 should have pretty poor eye appeal (perhaps equivalent to an AU53 or a low end AU55), but then MS61 and 62 can have decent eye appeal, especially for gold. A 63 should jump out at you, and a 65 should jump out at you, but I think of a 64 as being "not quite 65". A 66 should jump out at you, and a 68 should jump out at you, but similarly I think of a 67 as "not quite 68" and a 69 as a really nice 68. I don't put much stock in 70s versus 69s. So I think of it not as a curve but as a wavy line for those grades. In other words, the eye appeal jumps considerably every couple grades, but in-between not as much. A 65 has a definite "look" and should have a very tight range on eye appeal, because if it goes up much it jumps to a 66, and if it goes down a little it jumps to a 64. On the other hand there's a very wide range of eye appeal that a 64 can have between what is acceptable for a 63 and what it needs to have to hit a 65. Likewise 67 is a very broadly used grade with a wide range of eye appeal when compared to a 66 or a 68.[/QUOTE]