Watch List notes:

BULGARIA: 5 Leva (1985) in copper-nickel commemorating the Young Inventors Exposition. Rose on globe, denomination and date below on obverse. Expo design on reverse. Inside slab by NGC "PF 68 ULTRA CAMEO / YOUNG INVENTORS EXPO". Cert number: 6389132-056. (KM 154) & (Nikolov 199).