Imperial Brazilian Naval Officer's Sword, Regulation Model of 1823.

Senior officer's naval sword, corresponding to the second regulation model adopted in 1823 during the early years of the Brazilian Empire.

The hilt features a folding gilt-metal guard, the outer face bearing the Imperial Arms of Brazil. The knuckle guard, pommel cap, and ferrule are likewise executed in gilt metal and decorated with vegetal motifs characteristic of early nineteenth-century neoclassical taste. The grip is inset with mother-of-pearl panels engraved with incised ornamentation.

The blade is straight and single-edged, with a fuller extending nearly to the point. It is richly decorated with fire-gilded engravings depicting vegetal scrollwork and martial trophies. On one side appear the National Arms of the Empire of Brazil, the inscription "Piedro Primeiro" (a period rendering of Pedro I), and an anchor, symbol of naval service. The reverse bears the maker's mark of the English manufacturer "Richards & Co."

The scabbard is of leather with three gilt-metal mounts; the throat and middle mount are fitted with suspension rings. The maker's mark is also present on the scabbard.

This model was introduced shortly after Brazilian independence under Pedro I of Brazil. The early Imperial Navy played a decisive role in securing Brazil's territorial integrity during and immediately after independence (1822–1824). The presence of the Imperial Arms reflects the consolidation of the newly established constitutional monarchy.

The English maker's mark is historically significant. In the 1820s, Brazil relied extensively on British industry for naval equipment, arms, and technical expertise, reflecting the strong diplomatic and commercial alignment between the Empire of Brazil and Great Britain in the post-Napoleonic Atlantic world.