These motifs are known as Uhunmwu Ikpotoki in Edo, which translates as ‘Portuguese head’ in English. Portraits of Portuguese men, featuring only their heads and sometimes their shoulders, were used by artists as motifs on the Emwin Arhe (royal treasures), in particular on the Ama-Ẹrọnmwọn (bronze relief plaques) and Aken'ni Elao (carved altar tusks). Also included here are a series of two or three conjoined spirals, which are interpreted as abstract forms of this motif.

One of the earliest suggestions that many of the European figures depicted on objects were Portuguese was made two years after the 1897 British Colonial Military Campaign on Benin City by the British Museum curators Charles Hercules Read and Ormonde Maddock Dalton (1899, p. 19), based on testimony from seven chiefs in the aftermath of the military campaign. The long, straight hair, beards, and domed hats together led to the identification of these representations as Europeans (von Luschan 1919, pp. 54–57; Ezra 1992, p. 246).

When included within the visual imagery of the Emwin Arhe, the Portuguese are associated with the new Atlantic trade and the consequent wealth that emerged following first contact with the Portuguese in the late 15th century. For this reason, Portuguese heads are also often associated with the sea deity Olokun. Eisenhofer (2007, p. 59) argued that the Portuguese figures and heads as motifs on the royal treasures are symbols of the king’s power: “these depictions of foreigners helped to build and strengthen the king’s image.”

When incorporated into the design of the Ama-Ẹrọnmwọn (bronze relief plaques), Curnow (1997, p. 48) instead argued that these motifs could in fact indicate events that took place during Ọba Esigie’s reign. Ọba Esigie is associated with the Portuguese, as they became increasingly important during his reign, assisting with battles against the Igala from Idah, bringing Catholicism to Benin, and introducing weaponry such as guns and cannons, which were instrumental in the expansion of the kingdom.

Ukpọn is the Edo term for cloth (Aigbe 1985, p. 55; Ọbazee 2025, p. 542) and is used here to refer to the wrappers or kilts worn by many of the figures depicted on the Emwin Arre (royal treasures). The cloth worn around the waist may be plain, but it is more commonly richly decorated with motifs associated with the monarchy, power, and wealth, such as the Ọba'nui (infinity symbol) and Uhunme Ikpotoki (Portuguese heads).

The Benin Kingdom was renowned for its textile production, both for local use and for trade ( ). Within the royal court, members of the Owina n’Ido produced ukhuen cloth for the Ọba and other members of the court, who wore it as wrappers during festivals and ceremonies ( ).

Alongside locally produced textiles, imported cloth was also an important commodity in the Benin Kingdom’s trade networks. Textiles were exchanged with neighbouring production centres, particularly Ijebu ( ), while European traders brought silks, woollens, linens, and cotton from Europe and Asia from the 15th century onwards ( ).

Uman-ague is a badge in the form of an equal-armed cross. The cross with straight-sided arms is known as the “Greek cross,” while the type with V-shaped arms, narrowing toward the centre, is known as the “Maltese cross.”

Uman-ague is usually worn around the neck by members of the Ewua or by the Ohensa ( ). The equal-armed cross has various meanings: as a symbol of cosmic order, it represents the number four and references the “four cardinal points established by the High God Osanobua when he created the world” (Girshick Ben-Amos 1999, p. 64), as well as the “crossroads or junction that serves as the point of connection between the natural and spiritual worlds” ( ). Paula Girshick Ben-Amos ( ) also argues that when used on the Aken'ni Elao (altar tusk), the cross, together with the Ivie okpagbaru (royal bead), constitutes an “emblematic reference” to Ọba Ẹsigie.

The cross also references the Portuguese missionaries who brought Christianity to the Kingdom during the reign of Ọba Ẹsigie, although the symbol was already in use before the arrival of Europeans ( ). The Maltese cross is thought to have been introduced by Ọba Eresonyẹn as part of his efforts to encourage the worship of the High God Osanobua during his reign ( ; ). Regardless, Uman-ague is often associated with Ọba Ẹsigie.