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 allow). Some silver 50 fils coins have also been issued as non-circulating legal tender.
Within a circle in the middle, a palm tree. Around above, حُكُومَة البَحرَي (Government of Bahrain). Below, the date in Arabic numerals in Common Era (to the left) and Hijri year (to the right) divided by a dash: ١٣٨٥ - ١٩٦٥ (1385 - 1965).
Remick 1971 lists mintage of 2,000,000.
References to additional information:
[Book] Remick, Jerome. The Guide Book and Catalogue to British Commonwealth Coins, Regency Coins and Stamps Ltd, Winnipeg, Canada, 1971, p61