Grading designation question

MrSmith

I've been looking at a few coins lately and have run into "grading numbers" for lack of a better term, that I can't find what they mean. For example, XF-40, N-8, R-3. Well, XF-40 is easy. But what's N-8 ? I found out that "R" is a Rarity rating and that seems to vary depending on which scale you use and coin type, But I'm stumped for the "N" number. Is there a chart somewhere. Can anyone point me there?

Thanks.

Oldhoopster

It all depends on the context. The N-8 may refer to a specific variety. Researchers have written books and assigned attribution numbers to numerous series. Off the top of my head, N-8 may be a variety of 1816-1857 large cent as attributed by Newcomb. Earlier large cents are attributed by Sheldon numbers (S- )

MrSmith

Thank you very much. That help immensely. Google wasn't very helpful.

Kurisu

Try these too
https://www.pcgs.com/photograde
https://www.pcgs.com/glossary
:-)