Watch List notes:

BULGARIA: 2 Leva (1988) in copper-nickel commemorating the Soviet-Bulgarian Space Flight. Denomination and date within wreath, arms above on obverse. Space flight within diamond on reverse. Inside slab by NGC "PF 69 ULTRA CAMEO / JOINT SPACE FLIGHT". Top pop in NGC. Cert number: 6389132-040. (KM 166) & (Nikolov 223).