Frederick II of Hohenstaufen, King of Sicily (1208–1250). Frederick II of Hohenstaufen was the second king of the Swabian dynasty to sit on the throne of Sicily. He was crowned in 1198, but, in consideration of his young age, he only ruled independently from 1208 to 1250 (the year of his death). He not only held the title of King of Sicily but also was the King of Germany (or of the Romans), the King of Jerusalem, and, above all, Emperor of the Holy Roman Empire. His most relevant and innovative iconographic representations were in Southern Italy. For this reason, we focus on the images in this geographical context. In particular, we have nine official (that is, those commissioned directly by him or his entourage) representations of him: the bull (in three main versions), the seal (in three main versions), five coins (four denari and one augustale), the statue of the Capua Gate, and the lost image of the imperial palace in Naples.
Among the official representations of Frederick II, there are also those on the denari (silver coins) minted between 1220 and 1221 (in two different types) (about these denari, see [21] (p. 113, images no. 19, 19a, and 20)) and in 1225 (in two other types but, possibly, with a similar version minted already in 1222) (about these denari, see: [22] (Volume 18, pp. 201–202), [23] (p. 197), [21] (p. 98, image no. C4 and pp. 114–115, images no. 25–27), [5] (p. 274)). Their functions were mainly legal: they were used in order to corroborate the value of the coin. The coins of the first group were minted in Palermo and Messina, and their weight was approximately 0.7 g (between 0.38 and 0.5 g for the mezzo denaro version). Both inscriptions refer to Frederick as an emperor (FREDERICVS IMPERATOR) and as a king (FREDERICVS REX), instead their iconographies changes. The first coin presents the crowned royal bust with a scepter and cruciferous globe on the obverse side and a cross on the reverse side. The second coin also presents the royal image on the obverse side and a cross on the reverse side; however, here, Frederick II is instead seated and enthroned with a crown, scepter, and cruciferous globe. In both cases, the king seems shaven and has short hair. The coins of the second group were minted in Messina, and their weight was between 0.59 and 0.91 g (approximately 0.41 g for the mezzo denaro version). Both the inscriptions refer to Frederick as an emperor (FRIDERICVS IMPERATOR) and as a king of Jerusalem and Sicily (REX IERUSALEM ET SICILIE), while the iconography presents a little change. The two coins have a cross on the obverse side and a royal bust crowned with a high and squared crown (possibly the Reichskrone of the Holy Roman Empire) on the reverse side, and, in both cases, the ruler seems shaven. However, in the first, the king faces forwards and whether he has long or short hair is unclear; in the second, instead, Frederick faces to the side and has long hair (Figure 2).