Augustus of Prima Porta (Augusto di Prima Porta) is a full-length portrait statue of Augustus Caesar, the first emperor of the Roman Empire. The marble statue stands tall and weighs . The statue was discovered on April 20, 1863, during archaeological excavations directed by Giuseppe Gagliardi at the Villa of Livia owned by Augustus' third and final wife, Livia Drusilla in Prima Porta. Livia had retired to the villa after Augustus's death in AD 14. The statue was first publicized by the German archeologist G. Henzen and was put into the Bulletino dell'Instituto di Corrispondenza Archaeologica (Rome 1863). Carved by expert Greek sculptors, the statue is assumed to be a copy of a lost bronze original displayed in Rome. The Augustus of Prima Porta is now displayed in the Braccio Nuovo (New Arm) of the Vatican Museums. Since its discovery, it has become the best known of Augustus' portraits and one of the most famous sculptures of the ancient world. The imagery on the lorica musculata cuirass (typical of legates) refers to the Parthian restitution of the Roman eagles, or insignia, in 20 BC, one of Augustus' most significant diplomatic accomplishments. The date of the (hypothetical) bronze original is therefore later than 20 BC. The fact that Augustus is depicted barefooted is intended to be a divine representation, as this was a standard depiction of gods or heroes in classical iconography. The date of the marble copy would presumably fall between that date and Livia's death in AD 29. The statue might have been commissioned by Tiberius, the son of Livia and successor to Augustus. This hypothesis is based on the fact that Tiberius, who served as an intermediary in the recovery of the eagles, is also depicted on the cuirass. As this act was the greatest service he had performed for Augustus, the breastplate imagery would remind viewers of Tiberius's connection to the deified emperor and suggest continuity between both reigns. It is also possible that it was commissioned by Livia herself, Augustus's wife at the time of his death.