their effect as legal currency as of December 31, 2012. Second series (1998) In 1998, a new series of coins was introduced. After the withdrawal of tiyin denominated coins T 1 became the smallest denomination. T 100 were later introduced in 2002 replacing the equivalent notes. A T 2 coin was introduced in 2005. In 2013 the alloy of lower denomination coins was altered. Third series (2019) In 2019, a new series of coins was introduced into circulation, with the same coin specifications and metallic compositions as the second series. But with the inscriptions of the coins now rendered in Latin-based Kazakh instead of Kazakh-based Cyrillic. The coins were issued as part of the efforts of the presidential decree issued by former President Nursultan Nazarbayev of its transition of switching from a Cyrillic-based alphabet to a Latin-based alphabet and emphasizing Kazakh culture and distance the country from Russian influence. The designs of the coins were approved by Interim President Qasym-Zhomart Toqaev on March 20, 2019. Previously issued coins bearing the Kazakh Cyrillic script will remain legal tender alongside the new Kazakh Latin inscribed coins. In 2019, the National Bank of Kazakhstan announced the issuance of new ₸200 coins, which were issued into circulation in 2020. This new denomination features inscriptions in Latin-based Kazakh, and like the ₸100 coin, is bi-metallic. Commemorative coins Commemorative coins are issued in denominations of ₸20, ₸50, ₸100, ₸500, ₸1,000, ₸2,500, ₸5,000 and ₸10,000. Silver and gold bullion coins exist in denominations of ₸1, ₸2, ₸5, ₸10, ₸20, ₸50 and ₸100. Many of the ₸20 and ₸50 commemoratives are also struck in cupro-nickel and occasionally make it out into general circulation as a side coinage with face value. Banknotes 1993 series On 15 November 1993, the National Bank of Kazakhstan issued notes in denominations of 1, 2, 5, 10, 20, and 50 tiyn, T 1, T 3, T 5, T 10, T 20, and T 50; T 100 notes followed shortly thereafter. These were followed in 1994 by T 200, T 500, and T 1,000 notes. T 2,000 notes were introduced in 1996, with T 5,000 in 1999 and T 10,000 on 28 July 2003. Notes currently in circulation are: ₸200 - portrait of Al-Farabi ₸500 - portrait of Al-Farabi, fragment of Khodzha Akhmet Yassaui mausoleum ₸1,000 - portrait of Al-Farabi ₸2,000 - portrait of Al-Farabi ₸5,000 - portrait of Al-Farabi ₸10,000 - portrait of Al-Farabi,