© Teutoburger Münzauktion
© Teutoburger Münzauktion
1 Cash - Anonymous Kaiyuan Tongbao; iron ND
| Iron | - | 25 mm |
| Issuer | Empire of China |
|---|---|
| Type | Standard circulation coin |
| Years | 732-907 |
| Value | 1 Cash |
| Currency | Cash (621-1912) |
| Composition | Iron |
| Diameter | 25 mm |
| Shape | Round with a square hole |
| Technique | Cast |
| Orientation | Medal alignment ↑↑ |
| Demonetized | Yes |
| Updated | 2024-10-04 |
| Numista | N#239996 |
|---|---|
| Rarity index | 90% |
Reverse
Blank (uniface).
Edge
Plain
Comment
The iron pieces are mostly found in Sichuan due to bronze pieces not circulating there. It is said that bronze pieces also were not circulating in Hebei, so iron coins could have been cast there as well.DocYuanShoulders
Interesting fact
One interesting fact about the Kaiyuan Tongbao coin is that it was the first coin in China to feature a square hole in the center, which was designed to make it easier to string together multiple coins for large transactions. This innovative design feature has since become a distinctive characteristic of Chinese coins and has been used in various forms throughout history.
