Watch List notes:

BULGARIA: 1 Lev (1981) in copper-nickel commemorating the Russo-Bulgarian Friendship. Arms above denomination on obverse. Flags at top, hands grasped at center, date at bottom on reverse. Inside slab by NGC "PF 68 ULTRA CAMEO / RUSSIAN FRIENDSHIP". Cert number: 6389132-036. (KM 119) & (Nikolov 184).