AZERBAIJAN. 100 Manat, 2008. Vienna Mint. NGC PROOF-69 ULTRA CAMEO.Fr-unlisted; KM-unlisted. Struck to commemorate Murtuza Mammadov, also known as Bulbul, a famous Azerbaijani and Soviet opera tenor. From a mintage of only 1,000 pieces. Hard mirrored fields and frosted devices, wonderful detail on the obverse bust and musicians in traditional garb on the reverse playing traditional Azerbaijani instruments a Tar (long necked skin faced lute), a Kamancha (skin faced spike fiddle) and a Gaval (tambourine). No spots, tone, or fog interrupts the beauty of this piece.NGC PROOF-69 ULTRA CAMEO.