on the disc in the center - the designation of the denomination of the coin: “10 RUBLES”, inside the number “0” - hidden, visible alternately when changing the angle of view of the image of the number “10” and the inscription “RUB”, below - the mint trademark; on the ring above - the inscription: "BANK OF RUSSIA", below - the year of issue "2020", on the left and right - stylized branches of plants passing to the disk.

view of St. Nicholas Church, top left - the coat of arms of the city of Kozelsk; on the ring along the circumference there are inscriptions, above: “ANCIENT CITIES OF RUSSIA”, below: “KOZELSK”.

300 ribs and the inscription "TEN RUBLES", repeated twice, separated by asterisks.

Kozelsk is a city in the Kaluga region of the Russian Federation. The first mention of Kozelsk in Russian chronicles dates back to 1146. The city was founded on the site of an ancient settlement of the Slavs-Vyatichi and originally belonged to the Chernigov principality. Then, having gone through the princely strife, he withdrew to Novgorod-Seversky, becoming an independent inheritance. The legendary seven-week defense from the army of Khan Batu in 1238 brought historical glory to Kozelsk. All residents died, the city was destroyed, and Batu, angry with Kozelsk's resilience, called it "an evil city". Later Kozelsk became part of the Karachev principality. In the second half of the XIV century, the city was in the possession of Lithuania, since 1494 - as part of the Moscow state. In 1708-1713 Kozelsk was part of the Smolensk province, since 1713 - in the Moscow province, since 1719 - in the Kaluga province. Since 1776, Kozelsk has been a district town of the Kaluga governorship (later a province). In the XVIII-XIX centuries it was a transit trade city between Russia and Ukraine. From October 8 to December 28, 1941 Kozelsk was occupied by Nazi troops. On December 5, 2009, Kozelsk was awarded the honorary title "City of Military Glory" for the courage, resilience and mass heroism shown by the defenders of the city.

Artist: A.V. Gnidin. Sculptor: A.N. Bessonov.