10 000 Markkaa

Finland's postwar inflation had been severe enough by the mid-1950s that a 10,000 markka note was essentially a workhorse denomination, not a prestige issue. The 1955 series was printed by the Finnish Security Printing House (Setec), which had taken over production from foreign printers — a shift that happened gradually through the late 1940s and early 1950s as Finland rebuilt domestic capacity after the war years.

This note was rendered obsolete just three years after issue by the 1958 monetary reform, which introduced the new markka at a conversion rate of 100 old marks to one new. Most circulating examples were surrendered and destroyed during that exchange, making worn survivors more common than might be expected — but genuinely uncirculated examples considerably harder to find.