1. Banknotes of Ukraine - catalog of modern banknotes of Ukraine
2. Banknotes of Ukraine — Hryvnias
3. 50 uah 2011 Pam'yatna banknota 20 rokiv NBU S. Arbuzov, value 2011

The central portrait is of Mykhailo Hrushevskyi.

• Main feature: In the place where regular banknotes have a Cossack on a horse, a special SPARK element in the form of the inscription "НБУ 20 років" is placed.
• SPARK effect: When tilted, the color of the inscription changes from golden to green with a cinematic effect of a moving light bar.
• Signature: Facsimile signature of the Chairman of the Bank's Board — Serhiy Arbuzov.
• Elements: The book "History of Ukraine-Rus", the numerical denomination "50" is printed with standard optically variable ink (OVI).

The central image is the building of the Central Rada of the UNR.

• Design: Completely identical to the standard 50 Hryvnia banknotes of the 2004 design.
• Date: The year of issue 2011 is indicated at the bottom.
• Circulation: Ultra-rare issue — only 1,000 copies.

The commemorative 50 Hryvnias banknote was issued by the National Bank of Ukraine in 2011 to celebrate the 20th anniversary of its foundation. It is based on the standard 2004 design: the obverse features a portrait of Mykhailo Hrushevskyi, while the reverse depicts the building of the Verkhovna Rada of Ukraine. The key distinguishing feature of this commemorative issue is a special logo “20 років НБУ” (“20 Years of the NBU”), placed on the left side of the obverse. The logo is printed with optically variable ink that shifts its color from green to golden depending on the viewing angle, combining jubilee symbolism with advanced security technology. The note belongs to the NB series and was released in a strictly limited mintage of only 1,000 pieces. While it remains legal tender in Ukraine, due to its rarity and unique design it is primarily regarded as a highly collectible item.