Coin Collecting and Economic History Hub: Numismatics, Grading, and Precious Metals

Numismatics is the scholarly study and collection of coins, tokens, paper currency, and precious metal bullion. Far beyond a casual hobby, numismatics provides tangible economic artifacts documenting ancient sovereign empires, historical inflationary collapses, monetary bimetallism, and metallurgical evolution.

This hub organizes coin grading methodologies, metallurgical authentication physics, and monetary history deep dives.

1. Quick-Reference: The Sheldon 70-Point Grading Scale

+-----------------------------------------------------------------------------------------+
|                               SHELDON NUMISMATIC GRADING SCALE                          |
+-----------------------------------------------------------------------------------------+
| Grade Range            | Designation                       | Surface Characteristics    |
+------------------------+-----------------------------------+----------------------------+
| MS 70 / PR 70          | Perfect Mint State / Proof        | Zero post-strike blemishes |
| MS 65 - MS 69          | Gem Uncirculated                  | Full mint luster, min ticks|
| MS 60 - MS 64          | Mint State (Uncirculated)         | No wear; contact bag marks |
| AU 50 - AU 58          | About Uncirculated                | Slight friction on high pts|
| XF 40 - XF 45          | Extremely Fine                    | Light overall wear, sharp  |
| VF 20 - VF 35          | Very Fine                         | Moderate wear, full motifs |
| VG 8 - F 15            | Very Good / Fine                  | Heavy wear; rims intact    |
| G 4 - AG 3             | Good / About Good                 | Heavy wear; design merging |
+-----------------------------------------------------------------------------------------+

2. Core Numismatic Deep Dives