File:China - wu zhu coin showing traces of production process.JPG

This coin illustrates an aspect of the production process, as it has very clear marks of the process. The usual explanaition for the octagonal or "rosette" hole on some Far Eastern coins, is that the additional four corners on these coins are unintended indents from the square metal rod on which the coins were placed, to facilitate the filing of the edges of the coins. This particular coin shows considerable deformation of the metal (around the four extra corners), caused by the coin being forcibly placed on, or removed from, the rod. This coin is more thin in fabric than most Sung coins, which probably explains why the deformation is so clearly visible on this coin, but not on Sung coins.

此作品已由其作者，I, Alfons Åberg，釋出至公有領域。此授權條款在全世界均適用。 這可能在某些國家不合法，如果是的話： I, Alfons Åberg授予任何人有權利使用此作品於任何用途，除受法律約束外，不受任何限制。