Vāsudeva I (Kushano Bactrian: Βαζοδηο Bazodeo; Middle Brahmi script: Vā-su-de-va, Chinese: 波調 Bodiao; fl. 200 CE) was a Kushan emperor, last of the "Great Kushans." Named inscriptions dating from year 64 to 98 of Kanishka's era suggest his reign extended from at least 191 to 232 CE. He ruled in Northern India and Central Asia, where he minted coins in the city of Balkh (Bactria). He probably had to deal with the rise of the Sasanians and the first incursions of the Kushano-Sasanians in the northwest of his territory. The last named inscription of his predecessor, Huvishka, was in the year 60 of the Kanishka era (187 CE), and the Chinese evidence suggests he was still ruling as late as 229 CE. Contacts with China In the Chinese historical chronicle Sanguozhi (三國志), he is recorded to have sent tribute to the Chinese emperor Cao Rui of the Wei in 229 CE (3rd year of Taihe 太和), : "The king of the Da Yuezhi, Bodiao (波調) (Vāsudeva), sent his envoy to present tribute and His Majesty granted him a title of "King of the Da Yuezhi Intimate with Wei (魏)"." (Sanguozhi) He is the last Kushan ruler to be mentioned in Chinese sources. His rule corresponds to the retreat of Chinese power from Central Asia, and it is thought that Vasudeva may have filled the power vacuum in that area. The great expansion of the Dharmaguptaka Buddhist group in Central Asia during this period has also been related to this event. Coinage The coinage of Vasudeva consisted in gold dinars and quarter dinars, as well as copper coins. Vasudeva almost entirely removed the pantheon of deities displayed in the coinage of Kanishka and Huvishka. Apart from a few coins with the effigies of Mao and Nana, all of Vasudeva's coins feature Oesho on the reverse, who is generally identified as Shiva. On the obverse, Vasudeva restored the royal imagery of Kanishka, with the standing, making a sacrifice over an altar, although he holds a trident rather than Kanishka's spear and he appears nimbate. Another trident is sometimes also added over the small sacrificial altar. At the end of his rule, Vasudeva introduced the nandipada symbol () on his coinage. Sassanid invasion in the northwest Vusadeva I was the last great Kushan emperor, and the end of his rule coincides with the invasion of the Sassanians as far as northwestern India, and