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Kölln-Reisiek is a small village in Schleswig-Holstein — today best known as the home of Kölln-Flocken, Germany's oldest oat flake producer. In 1921, like hundreds of similarly minor German municipalities, it issued its own emergency paper currency under the Notgeld system, a direct consequence of the chronic small-coin shortage that had persisted since the war years and worsened sharply with postwar inflation.

Konrad Hanf in Hamburg was a commercial printer who handled Notgeld commissions for numerous small northern German issuers during this period — volume work, not prestige engraving.