the country's name. Since 1975, new coins have been issued with the country's name given as Oman. Coins In the 1890s, coins for and anna ( and 1 paisa) were minted specifically for use in Muscat and Oman. In 1940, coins were issued for use in Dhofar in denominations of 10, 20 and 50 baisa. rial coins were added in 1948, followed by 3 baisa in 1959. In 1946, 2, 5 and 20 baisa coins were introduced for use in Oman. These were followed, between 1959 and 1960, by 3 baisa, and 1 rial coins. 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. and rial coins were introduced in 1980. Coins currently circulating are 5, 10, 25 and 50 baisa Coins with the value of 100 baisa and above lost their monetary value on 20 May 2020. Banknotes On 7 May 1970, the Sultanate of Muscat and Oman issued banknotes in denominations of 100 baisa, , , 1, 5 and 10 rial saidi. These were followed by notes for 100 baisa, , , 1, 5 and 10 Omani rials issued by the Oman Currency Board on 18 November 1972. From 1977, the Central Bank of Oman has issued notes, with 20 and 50 rial notes introduced that, followed by 200 baisa notes in 1985. A new series of notes was issued on 1 November 1995, and the 5-rial notes and higher were updated in 2000 with foil strips. In 2005, a red 1 rial note commemorating the "35th National Day" was issued. In 2010, new 5, 10, 20 and 50-rial notes were issued on the occasion of the 40th National Day. The 20-rial note is blue instead of green while the other notes are the same colour as previously. In 2015, a purple 1 rial note commemorating the "45th National Day" was issued. After 30 July 2019, all banknotes issued before 1 November 1995 became invalid, as well as the 5 to 50 rial banknotes issued on that date without foil strips. The 5 to 50 rial banknotes of the 1995 series with foil strips, released into circulation from 2000, remain valid. Thus, as of 2020, banknotes in circulation are mainly the 2010 series of 5 to 50 rial, the 2015 1-rial note,