BULGARIA: 10 Leva (2000) in silver (0,925) commemorating the Bulgarian Association with the European Union. National arms, date and denomination below on obverse. Bulgarian coin design of the Middle Ages featuring Czar Theodor Svetoslav on reverse. Inside slab by NGC "PF 68 ULTRA CAMEO / EUROPEAN UNION / TSAR TODOR TERTER". Cert number: 6633778-001. (KM 253) & (Nikolov 314).