The augustalis was a gold coin produced by the Holy Roman Emperor Frederick II beginning in 1231 at the Sicilian mints of Messina and Brindisi.
The obverse features the antique (not medieval) bust of the emperor wearing a laureate wreath and the reverse features an eagle. Stylistically the coin is inspired by the aurei of ancient Rome. The coin weighed about 5.24 grams, which is ¼ of a Sicilian gold ounce.
The name augustalis means literally "of the august one", referring to the coin's provenance from the Emperor himself, but also linking it with the Roman Emperor, who was commonly styled Augustus.
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