Boars are a familiar animal in Celtic iconography and mythology.
The well-known Celtic shield from the River Witham in England bears traces of an earlier appliqu in the form of a stylized boar. There are many Celtic coins that include the figure of a boar as a secondary device. The coins that have this as a main design are either silver or bronze, but interestingly, almost never gold. As I mentioned earlier, the popular interpretation of the boar on Celtic coins is that it represents a standard, based on the existence of Roman sculptures that show such standards. A better definition is that these sculptures depict boar totems.