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 500 Fils (0.500 Dinar) coin is the largest circulating denomination.
Larger denominations have only been issued as non-circulating legal tender and are struck in precious metals. There have been no coins issued explicitly carrying the denomination of Ten Dinars. However, some gold issues have traditionally been considered (and were initially listed in Remick and Krause catalogues as) such even though the text on them does not call them "ten dinars". Current thinking seems to classify them as medals instead.
This coin was the first in the series. It commemorates the opening of Isa Town and parallels a 500 Fils silver coin in design.
Within an octagon, the crowned Coat of Arms of Bahrain; above, البحرين (Bahrain); below, the same in English: BAHRAIN.
Outside the octagon to the left, the date in Arabic numerals, in Hijri year then in Common era: ١٣٨٨-١٩٦٨; to the right, the same with common numerals: 1388-1968, the town name is in Arabic around above: مدينة عيسى and in English around below: ISA TOWN.
There is no denomination or value.
Krause catalogues listed this coin for a while as KM# 9, then X# M1; now it is not listed.
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