NGCX a new 10 point grading scale from NGC

Mr. Numismatist · Dec 22, 2023

Jaelus said: ↑

It seems like many folks are still thinking this is a different grading method. It's not. It's the same wear-based grading scale we have now, it's only the number reported that changes. Each step up in the grading scale 1-70 is still a step up in the grading scale 1.0-10.0.

Not that I'm advocating for this new methodology, but some of the arguments I'm reading here against it just don't hold water. Fundamentally everyone understands a 10 point scale where there is a "perfect 10". We have 10 fingers. This concept is more ingrained into our culture than a 70 point scale is.

And some of these arguments read like how can 70 be perfect when we all know a 70 is a C on the 100 point grading scale? Something everyone knows from school. Where also are the complaints that the steps in the Sheldon scale skip over tons of grades that aren't actually used. Where are the 21s, 22s, 23s, and 24s for example? Where are the 56s, 57s, and 59s? What's the point of skipping over numbers when they aren't actually used for anything? Well that's what this scale does.

Instead of going AU 50, AU 53, AU 55, AU 58 it goes AU 8.0, AU 8.3, AU 8.5, AU 8.8. It's the same grade steps, they've just eliminated all the unused numbers and added decimals. So before think of AU as being 50 + 0, 3, 5, or 8. Now it's 8 + 0.0, 0.3, 0.5, or 0.8. MS 70 is now 10. MS 60 is now 9.0 and the MS steps are each 0.1 points instead of 1 point. They haven't changed grading at all they have just repackaged it.
Click to expand...

So is this the way a 100 point grading system convert to the Sheldon scale?

10.0 = 70
9.9 = 69
9.8 = 68
9.7 = 67
9.6 = 66
9.5 = 65
9.4 = 64
9.3 = 63
9.2 = 62
9.1 = 61
9.0 = 60
8.8 = 58
8.5 = 55
8.3 = 53
8.0 = 50
7.5 = 45
7.0 = 40
6.75 = 35
6.5 = 30
6.25 = 25
6.0 = 20
5.5 = 15
5.0 = 12
4.5 = 10
4.0 = 8
3.5 = 6
3.0 = 4
2.0 = 3
1.0 = 2
0.0 = 1

And how do you translate a plus, say MS-64+. Would it be 9.45?

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mrweaseluv · Dec 23, 2023

Yeah I got one mostly to have an example of the slab... but I did make sure it was a pretty (not just an excuse to grab another modern commem honest lol)

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NGCX a new 10 point grading scale from NGC

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