The Shaka era is a historical Hindu calendar era, the epoch of which corresponds to Julian year 78.
Coin of Western Satrap ruler Damasena. The minting date, here 153 (100-50-3 in Brahmi script numerals) of the Saka era, therefore 231 CE, clearly appears behind the head of the king.
Mohar of Gorkhali king Prithvi Narayan Shah dated Shaka era 1685 (AD 1763)
Chashtana was a ruler of the Saka Western Satraps in northwestern India during 78-130 CE, when he was the satrap of Ujjain.
Silver coin of Chashtana, with ruler profile and Greek script legend ΡΑΝΝΙω ΙΑΤΡΑΠΑϹ ϹΙΑϹΤΑΝϹΑ. British Museum.
Coin of Chastana, found in Junagadh.
Coinage of Chastana with complete reverse legend in Brahmi, with a repetition of the name of the ruler in Kharoshthi: "Of the Rajah, the Great Satrap, son of Ysamotika, Chashtana Chatḥaṇa"
Image: Inscribed Image of Saka King Chstan Kushan Period Mat ACCN 12 212 Government Museum Mathura 2013 02 24 5904