The mohur is a gold coin that was formerly minted by several governments, including those of British India. It was usually equivalent in value to fifteen silver rupees. Gold mohurs issued by the British East India Company or the Crown are valuable collectors' items, and sell in auctions for high prices. The double mohur (minted between 1835 and 1918), with a value of thirty rupees, is the highest-denomination circulating coin ever issued in India. The 1835 two-mohur coin above was minted in the reign of King William IV, while the 1862 one-mohur coin below was minted in the reign of Queen Victoria; both are now part of the National Numismatic Collection at the National Museum of American History.Coin design credit: East India Company and the Calcutta Mint; photographed by Andrew Shiva