100 Una

The "Una" denomination — named after the river forming part of the western border of Bosnia and Herzegovina — was a proposed transitional currency unit introduced as Yugoslavia's federal monetary structure collapsed in 1991. The Državna Banka Bosne i Hercegovine issued these notes in anticipation of full monetary independence, though the Una never achieved widespread legal tender status before the outbreak of war in April 1992 rendered the entire series moot.

Most were printed but never circulated in any meaningful quantity. The Bosnian dinar ultimately replaced this stillborn currency framework.