Българска народна банка

The obverse features the headquarters building of the Bulgarian Academy of Sciences, with the years ‘1869-1989’ above and the year of issue ‘1989’ and the value ‘20 ЛЕВА’ (20 levs) below. The design is encircled by stylised sun rays and the words ‘БЪЛГАРСКА АКАДЕМИЯ НА НАУКИТЕ’ (Bulgarian Academy of Sciences) and ‘120 ГОДИНИ’ (120 years).

The reverse features the coat of arms of the People’s Republic of Bulgaria, framed by stylised sun rays, all surrounded by the words ‘НАРОДНА РЕПУБЛИКА БЪЛГАРИЯ’ (People’s Republic of Bulgaria) and five five-pointed stars.