The royal coat of arms of the Baustralia, or the Royal Arms for short, is the official coat of arms of the Baustralian monarch, John I. These arms are used by the King as the monarch of the Baustralia. Variants of the Royal Arms are used by other members of the Baustralian royal family. The arms in banner form serve as basis for the monarch's official flag, known as the Royal Standard.
In the standard variant used outside of Scotland, the shield is quartered, depicting in the first and fourth quarters the Baustralian fish; in the second, the Riel of Ostreum; and in the third, a W for Wangatangia. The crest is a statant guardant lion wearing the Tudor, himself on another representation of that crown. The supporters are a likewise crowned lion.
In the greenery below, a fish swimming in a creek are depicted, representing Tentacion Creek, which was the location of the battle for Tentacion independence. This armorial achievement comprises the motto, in French, of the Baustralian monarch, Dieu et mon Droit (God and my Right), as well as the Gadus circlet which surrounds the shield, inscribed with the Order's motto, A bene placito (From one well pleased).