1977 N20 Naira Central Bank of Nigeria BankNote Signed currency. On 11th February, 1977, Nigeria issued a currency note denomination of the value ofTwenty (N20) Naira. The banknote was the first currency note to bear the portrait of a Nigerian citizen, the late Head of State,General Murtala Ramat Muhammed(1938-1976) who was assassinated but declared a national hero for his leadership qualities. The note was issued on the 1st anniversary of his assassination as a befitting tribute to an illustrious son of Nigeria. This has been folded and faded sold as found see all photos not 100% on exact date of this release but based off research potential first release. I see it's got writing on it no idea what it's for