100 Markkaa

Finland's post-independence monetary situation was precarious enough that the Bank of Finland was still issuing notes well before a coherent long-term currency framework had stabilized. The 1922 series reflected that transitional pressure — designs were conservative, and the printing arrangements drew on established European security printers rather than any domestic capability Finland had yet to develop.

Pick 46 is notable for its unusually square format, a proportional oddity that sets it apart from nearly every contemporary European issue of comparable denomination.