The sum (; in Latin script, сўм in Cyrillic script, سوم in Arabic script; ISO code: UZS) is the official currency of Uzbekistan. Etymology The official name of the Soviet currency in Kazakh, Kyrgyz, Tajik, and Uzbek was som, and this name appeared written on the back of banknotes, among the texts for the value of the note in all 15 official languages of the USSR. The word sum (alternatively transliterated "som" or "soum") means "pure" in Kazakh, Kyrgyz, Uyghur and Uzbek, as well as in many other Turkic languages. The word implies "pure" silver or gold. First sum History Like other republics of the former Soviet Union, Uzbekistan continued using the Soviet/Russian ruble after independence. On 26 July 1993, a new series of Russian ruble was issued and the old Soviet/Russian ruble ceased to be legal tender in Russia. Some successor states had their national currencies before the change, some chose to continue using the pre-1993 Soviet/Russian ruble, and some chose to use both the pre-1993 and the new Russian ruble. Tables of modern monetary history: Asia implies that both old and new rubles were used in Uzbekistan. Uzbekistan replaced the ruble with the sum at par in on November 15, 1993. No subdivisions of this sum were issued and only banknotes were produced, in denominations of 1, 3, 5, 10, 25, 50, 100, 200, 500, 1,000, 5,000, and 10,000 sum. Because it was meant to be a transitional currency, the design was rather simplistic. All notes had the Coat of arms on obverse, and Sher-Dor Madrasah of the Registan in Samarkand on reverse. Coins No coins were issued for the first sum. Banknotes The first banknotes were issued by the State Bank of Uzbekistan in 1993. All of the denominations share the same designs: the Coat of arms of Uzbekistan on the front and the madrasahs on Registan Square in Samarkand. Second sum History On 1 July 1994, a second sum was introduced at a rate of 1 new sum = 1,000 old sum. This sum is subdivided into 100 tiyin. Inflation Until 2013, the largest denomination of Uzbek currency was the 1,000 sum banknote, then worth US$0.60, requiring Uzbeks to carry large bundles of notes for routine transactions. Since 2019, the largest denomination is the 100,000 sum banknote (as of October 2019 worth US$10.55), which made the situation easier. The smallest denomination, the 1 tiyin, is worth