Nader Shah Afshar (6 August 1698 or 22 October 1688 – 20 June 1747) was the founder of the Afsharid dynasty of Iran and one of the most powerful rulers in Iranian history, ruling as shah of Iran from 1736 to 1747, when he was assassinated during a rebellion. He fought numerous campaigns throughout the Middle East, the Caucasus, Central Asia, and South Asia, emerging victorious from the battles of Herat, Mihmandust, Murche-Khort, Kirkuk, Yeghevārd, Khyber Pass, Karnal, and Kars. He has been described as "the last great Asiatic military conqueror", and his victories during his campaigns briefly made him West Asia's most powerful sovereign, ruling over what was arguably the most powerful empire in the world. Nader also changed the Iranian coinage system, minting silver coins, called Naderi, that were equal to the Mughal rupee. This silver coin was minted in Dagestan and is dated 1741–1742.