Българска народна банка

The obverse of the coin features centrally the coat of arms of the People’s Republic of Bulgaria. In circumference around the edge there are the inscriptions ‘НАРОДНА РЕПУБЛИКА БЪЛГАРИЯ’ (PEOPLE’S REPUBLIC OF BULGARIA), the nominal value ‘10’, the word ‘ЛЕВА’ (LEVS), the year of issue ‘1975’. Below, to the left and to the right of it, in small print are the names of the authors of the design ‘СТ. НЕНОВ’ (ST. NENOV) and ‘ЧАПКЪНОВ’ (CHAPKANOV). The composition is completed with a grainy circle.

The reverse of the coin features a replica of a Roman bronze coin minted in Philippopolis at the time of Emperor Elagabalus. Below it there is the emblem of the IOC and an inscription ‘ВАРНА’ (VARNA). In circumference around the edge there is the inscription ‘ДЕСЕТИ ОЛИМПИЙСКИ КОНГРЕС’ (TENTH OLYMPIC CONGRESS). The composition is completed with a grainy circle.