Coins have been used as a form of currency across the world for almost three thousand years. Much like today, the earliest coins were formed from metals, with more precious metals reflecting higher monetary value; one of the most common metals used is copper, which generally denotes a lower worth. Antique and rare copper coins can hold high value on the collectors' market and be of particular interest to numismatists, such as those produced in British India. Before the nation was transferred to the British crown, the East India Company held India from the 17th until the 19th century; during this time, the EIC established a mint in Bombay producing coins in various metals including the copperoon. Other coppers coins which can be of worth on the market include Ancient Greek, Roman, Japanese and Mughal.