Edited sentence: A year or two later, copper dollar fractions were struck for Mauritius, the British West Indies, and Sierra Leonne.In 1820, in response to a request from the British colony of Mauritius, the imperial government in London struck silver coins in the denominations of 1/4, 1/8, and 1/16 dollars.In addition to this, a 1/2 dollar anchor coin was struck for Mauritius.More of these anchor dollars were struck in 1822 and not only for Mauritius but also for the British West Indies.The dollar unit in question was equivalent to the Spanish dollar and these fractional coins were known as 'Anchor Dollars' because of the anchor that appeared on them