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On 1 December 2009, the Czech National Bank introduced a new version of the 5,000-korun (US$287) note, now dated 2009 (offset printed in black) and with enhanced security features. The 1999 note of the same denomination remains legal tender, while the 1993 version remains exchangeable at the CNB.
The 2009 note is signed by Governor Tůma and bears series letter C. Among its new security features are “bichrome patterned iridescent metallic strip of overlapping gold and purple with recurring quartets of linden leaves and negative 5000s” to the right of the portrait on the front of the note. The note is also protected by Omron rings, 3-mm wide puce-to-green color-shifting windowed security thread with demetalized ČNB 5000 Kč, and the watermark of Tomáš Garrigue Masaryk now has 5000 and sitting eagle electrotype elements.
Courtesy of Kevin Klauss and Evzen Sknouril.