Noun
rublis (plural rubli or rublu)
The currency of Latvia from 1919 to 1922 and from 1992 to 1993.
On March 27, 1919 the Latvian rublis was introduced with an exchange rate of 1 Latvian rublis equal to 1 ostruble, 2 German marks and 1,5 czar rubles. Source: Internet
Due to high inflation, the new Latvian lats currency was introduced at a rate 1 lat to 50 rublis. Source: Internet