OMAN COMMEMORATING 50 YEARS OF UN-1945-1995-50 BAISAS (Commemorative coin)

The rial  is the currency of Oman.its ISO 4217 international currency code is OMR. It is divided into 1000 baisa. 

Before 1940, the Indian rupee and the Maria Theresa Thaler (known locally as the rial) were the main currencies circulating in Muscat and Oman, as the state was then known, with rupees circulating on the coast and Thaler in the interior. Maria Theresa Thaler were valued at 230 paisa, with 64 paisa equal to the rupee.

In 1940, coins were introduced for use in Dhofar, followed, in 1946, by coins for use in Oman. Both coinages were denominated in baisa (equivalent to the paisa), with 200 baisa to the rial. The Indian rupee and, from 1959, the Gulf rupee continued to circulate.

In 1970, the rial Saidi (not to be confused with Saudi riyal) was made the currency of Oman. It was equal to the British pound and replaced the Gulf rupee at a rate of approximately 21 rupees to the rial. The new rial was subdivided into 1000 baisa. The rial Omani replaced the rial Saidi at par in 1973. The currency name was altered due to the regime change in 1970 and the subsequent change of the country's name.

In 1970, a coinage for all of Muscat and Oman was introduced. Denominations were 2, 5, 10, 25, 50 and 100 baisa. In 1975, new coins were issued with the country's name given as Oman. ¼ and ½ rial coins were introduced in 1980.

In 1995 the coin was issued for the first and last time.its Weight is 6.4 grams and Diameter is 24 mm.The coin was issued diring the reign of Sultan Qaboos bin Said Al (1971--) and is made up of copper (75%) and nickel (25%). The front shows Coat of arms(khanjar dagger in a sheath in front of 2 crossed swords ) and Sultans name around it. The front shows U.N. emblem and the  year commemorating 50 years of U.N foundation. 
Currently the coin is not circulating and costs more than $10.

UNITED ARAB EMIRATES 1963-1998 1 DIRHAM "THE NATIONAL BANK OF DUBAI 35th ANNIVERSARY (Commemorative Coin)

The dirham is the currency of the United Arab Emirates .The ISO 4217 international currency code for the United Arab Emirates dirham is AED. Unofficial abbreviations include DH or Dhs. The dirham is subdivided into 100 fils

The name Dirham derives from the Greek word Drachmae, literally meaning "handful", through Latin.Due to centuries of old trade and usage of the currency, dirham survived through the Ottoman regime.

The United Arab Emirates  dirham was introduced 19 May 1973. It replaced the Qatar and Dubai riyal at par. The Qatar and Dubai riyal had circulated since 1966 in all of the emirates except Abu Dhabi where the dirham replaced the Bahraini Dinar at 1 dirham = 0.1 dinar. Before 1966, all the emirates that were to form the UAE used the Gulf rupee. As in Qa, the emirates briefly adopted the Saudi riyal during the transition from the Gulf rupee to the Qatar and Dubai riyal.

In 1973, coins were introduced in denominations of 1, 5, 10, 25, 50 fils, and 1 dirham. The 1, 5 and 10 fils are struck in bronze, with the higher denominations in cupro-nickel. The fils coins were same size and composition as the corresponding Qatar and Dubai dirham coins. In 1995, the 50 fils and 1 dirham coins were reduced in size, with the new 50 fils being curve-equilateral-heptagonal shaped.

The value and numbers on the coins are written in Eastern Arabic Numerals and the text is inArabic. The 1, 5 and 10 fils coins are rarely used in everyday life, so all amounts are rounded up or down to the nearest multiples of 25 fils. The 1 fils coin is a rarity and does not circulate significantly. In making change there is a risk of confusing the old 50 fils coin for the modern 1 dirham coin because the coins are almost the same size.

Since 1976 the Currency Board of the United Arab Emirates  has minted several commemorative coins  celebrating different events and rulers of the United Arab Emirates.

This is a commemorative coin issued in 1998 during 35th anniversary of the National Bank of Dubai..The coin is of 6.5 gram and diameter of 24 mm. Zayed bin Sultan Al Sultan Al Nahyan van Verenigde Arabische Emiraten(1971-2004).Obverse reads 1963-1998 The National Bank of Dubai 35th Anniversary and reverse reads United Arab Emirates in Arabic. 

500,000 cupro-nickel(copper nickel) coins were minted and now its peak value is $ 23.