Banknote 50 uah (2011) – С. Арбузов Памятная
| Denomination | Year of issue | Date of introduction into circulation | Withdrawal date | Signature |
| 50 UAH | 2011 | 05.10.2011 | 01.11.2024 | С. Арбузов |
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.
