The Bahraini Dinar was introduced as a currency in 1965, six years before Bahrain gained full independence; it replaced the Gulf Rupee at a rate of 10 rupees = 1 dinar. The Dinar is subdivided into 1,000 Fils (the singular form is also Fils); hence it is usually represented with three decimal places denoting the Fils. The 50 Fils (0.050 Dinar) coin is a relatively small denomination.
The 1965 issue (and a 1983 commemorative silver) were smaller in diameter, while later coins were made larger. Ever since their first issue, 50 fils coins have been made from cupronickel (copper-nickel alloy). Some silver 50 fils coins have also been issued as non-circulating legal tender.