1. The pattern is larger, and the pattern of Gansu hedgehog is more prominent and fine than other hedgehogs, occupying most of the space of coins.
2. The manufacturing process is simple. Compared with the current coins, the Gansu version of Hedgehog Coin is very simple and primitive, and there may be some flaws or depressions on the surface of the coin.
The thickness of this material is uneven. Because the production process is not fine enough, the material thickness of Gansu hedgehog is uneven, which may cause the pattern on the coin to be slightly deformed.
These are the characteristics of the hedgehog in Gansu. If you have more detailed information, you can consult a professional coin collector.