Coin Grading Information
Many different Organizations offer Grading and slabbing services
Grading does differ amongst them and memberships are available by most.
The grade applied to a coin determines what the coin is worth when buying, selling, etc.

I have a lot of work to do here -Explanations of what these mean and where they originate.
Will probably group these by their originating grading services, along on how to contact the Service.
I feel grading a coin can be very subjective and requires a professional to do so but you can get close.
If you want a coin graded choose a reliable service and I have no opinion on which one is best.

Coin Grading & Condition Codes
AG-3 (A.N.A.)
AU
AU-50 (A.N.A.)
AU-53 (A.N.A.)
AU-55 (A.N.A.)
AU-58 (A.N.A.)
BU
Cameo
Certified
Circulated
Circulation Strikes (A.N.A.)
Cleaned ?
Contact Marks (A.N.A.)
Cull
Dull
EF-40 (A.N.A.)
EF-45 (A.N.A.)
Encapsulated
Eye Appeal (A.N.A.)
F-12 (A.N.A.)
F-15 (A.N.A.)
Fair
FAIR-2 (A.N.A.)
Frosted
G-3 (A.N.A)
G-4 (A.N.A)
G-6 (A.N.A)
Good
Hair Lines (A.N.A.)
Luster (A.N.A.)
Mirror Frosted Bust
Mirrored
MS-60 (A.N.A.)
MS-61 (A.N.A.)
MS-62 (A.N.A.)
MS-63 (A.N.A.)
MS-64 (A.N.A.)
MS-65 (A.N.A.)
MS-66 (A.N.A.)
MS-67 (A.N.A.)
MS-68 (A.N.A.)
MS-69 (A.N.A.)
MS-70 (A.N.A.)
NGC
PCGS
Poor
POOR-1 (A.N.A.)
PROOF (Official A.N.A.)
Proof Mint Packaged
Raw
Uncirculated
Uncirculated Mint Packaged
VF-20 (A.N.A.)
VF-25 (A.N.A.)
VF-30 (A.N.A.)
VF-35 (A.N.A.)
VG-10 (A.N.A)
VG-8 (A.N.A)