Latvia as its currency since 1 January 2014, replacing the Latvian lats. The name "Latvija" is derived from the name of the ancient Latgalians, one of four Indo-European Baltic tribes (along with Couronians, Selonians and Semigallians), which formed the ethnic core of modern Latvians together with the Finnic Livonians. Henry of Latvia coined the latinisations of the country's name, "Lettigallia" and "Lethia", both derived from the Latgalians. The terms inspired the variations on the country's name in Romance languages from "Letonia" and in several Germanic languages from "Lettland". Around 3000 BC, the proto-Baltic ancestors of the Latvian people settled on the
Latvian lats and 50 santīmu were nickel, while coins of 1 lats and above were in silver, with a purity of 83,5 percent. The Latvian Bank issued notes from 1922 in denominations of 20, 25, 50, 100 and 500 latu. They also issued 10 latu notes which were 500 rubli notes overprinted with the new denomination. The government issued currency notes from 1925 in denominations of 5, 10 and 20 latu. The lats was reintroduced on 5 March 1993, replacing the Latvian rublis, which continued to circulate and kept validity until and including 30 June 1994 at a rate of 200 rubļu