SIERRA LEONE: 1 Leone (1.7.1980) commemorating banknote in olive-green and dark green on multicolor unpt with President Siaka P Stevens at left. S/N: "A/1 001176". Red ovpt "COMMEMORATING THE ORGANISATION OF AFRICAN UNITY CONFERENCE FREETOWN 1980" circular around watermark area at right of Pick #5. WMK: Lion head. Printed by TDLR. Inside holder by PMG "Superb Gem Unc 67 EPQ". Top pop in PMG. (Pick 10) & (part of Spink BSL BNP2a).