Depicts tar resins and the heart of a stone-covered tar-burning pit, as tar burning is an old Ostrobothnian industry. Country name in Finnish and Swedish on the ring.

Between the 17th and 19th centuries, the flat Ostrobothnian plains crisscrossed by rivers were ideal terrain for transporting the heavy tar, which was a hefty load. Large amounts of tar were made of Ostrobothnian pine trees in round tar burning pits with a funnel-shaped bottom.

Depicts the historic coat of arms of Ostrobothnia, a region of Finland surrounded by the value and the date above. Engraver's initial (T) and the mint's logo (lion) on the right.

Ostrobothnia (Swedish: Österbotten (literally "Eastern Bottom"), Finnish: Pohjanmaa (literally "Bottom (low) lands" or alternatively "Northland")) is a historical province comprising a large western and northern part of modern Finland. During the time of the historic provinces, Ostrobothnia covered much of what is now Southern Ostrobothnia, Central Ostrobothnia, Northern Ostrobothnia and Southern Lapland.

The coat of arms is crowned by a count's coronet, though in Finnish tradition it more closely resembles a Swedish baron's coronet. The blazon is azure, with six ermines (stoats) courant argent, tail-tips sable.