Obverse: Stylized, ancient Lithuanian Grand Duchy coat of arms on the panel, which is surrounded by the inscription "LIETUVA 50 LITŲ 2010".
Reverse: The stylized image of the Birzai castle above it in a semicircle inscribed "BIRŽŲ PILIS", the bottom of the coin - the rider with the flag of which featured Birzu coat of arms - black eagle.
Edge: Edge engraved words "ISTORIJOS IR ARCHITEKTŪROS PAMINKLAI".
Additional information: The coin has a certificate of authenticity.
The design of the coin: Vytautas Narutis.