Diameter 101The diameter of ancient coins is usually expressed in millimeters. In Forum’s catalog descriptions you will usually find the coin’s weight, then maximum diameter, followed by the die axis. The ancient denomination names and values of some late Roman bronze coins are uncertain. Often they are referred to with the following size (diameter) designations: We also do not know the names of the denomination or value of many Greek and Roman provincial coins. Often the denomination given for these types is simply AE, indicating a base metal or alloy, mostly copper, followed by the diameter in millimeters. An AE23 is a base metal (copper, bronze or brass) coin with a 23 millimeter diameter. Diameters of Modern Coins for ComparisonSince many Americans are not familiar with millimeters and because it can help anyone visualize size better, we provide comparisons to modern coins below.
Inch and Millimeter EquivalentsDivide millimeter lengths by 25.4 to determine the inch length.
- 101Ancient| |Coin Collecting| 101Uncleaned Ancient Coins 101 Roman Coin Attribution 101 Greek Coin Collecting 101 Patina| 101 Magnification| 101 Die Alignment| 101 Bust| |Types| 101 | Diameter 101The diameter of ancient coins is usually expressed in millimeters. In Forum’s catalog descriptions you will usually find the coin’s weight, then maximum diameter, followed by the die axis. The ancient denomination names and values of some late Roman bronze coins are uncertain. Often they are referred to with the following size (diameter) designations: We also do not know the names of the denomination or value of many Greek and Roman provincial coins. Often the denomination given for these types is simply AE, indicating a base metal or alloy, mostly copper, followed by the diameter in millimeters. An AE23 is a base metal (copper, bronze or brass) coin with a 23 millimeter diameter. Diameters of Modern Coins for ComparisonSince many Americans are not familiar with millimeters and because it can help anyone visualize size better, we provide comparisons to modern coins below.
Inch and Millimeter EquivalentsDivide millimeter lengths by 25.4 to determine the inch length.
- 101Ancient| |Coin Collecting| 101Uncleaned Ancient Coins 101 Roman Coin Attribution 101 Greek Coin Collecting 101 Patina| 101 Magnification| 101 Die Alignment| 101 Bust| |Types| 101 Ancient Coin Prices 101 |