Russian ruble

The ruble or rouble (Russian: рубль, rublʹ, plural рубли́, rubli; see note on English spelling) (code: RUB) is the currency of Russia and the two partially recognized republics of Abkhazia and South Ossetia. Formerly, the ruble was also the currency of the Russian Empire and the Soviet Union before their dissolution. Belarus and Transnistria use currencies with the same name. The ruble is subdivided into 100 kopeks (sometimes written as kopecks or copecks; Russian: копе́йка, kopeyka; plural: копе́йки, kopeyki). The ISO 4217 code is RUB or 643; the former code, RUR or 810, refers to the Russian ruble before the 1998 redenomination (1 RUB = 1000 RUR).
On 11 December 2013, the official symbol for the ruble became , a Cyrillic letter er with a single added horizontal stroke, though the abbreviation руб. is in wide use. In Unicode version 7.0 it was assigned the encoding U+20BD ₽ ruble sign...