20 Korun

Kulhánek designed the entire foundational Czech koruna series following the January 1993 currency separation from Slovakia — a split that required an entirely new note family to be produced on an extremely compressed timeline. The 20 Kč was among the first denominations released, with Státní Tiskárna Cenin handling all domestic production from the outset, a deliberate policy choice to keep Czech currency printing within national borders from day one.

Ondráček and Fajt worked as a regular engraving pairing across several denominations in this series. The security specification here is relatively modest by contemporary standards — no hologram, no color-shifting ink — reflecting both the note's low face value and the practical realities of equipping a newly independent central bank.