Banknoten Afrika und Naher Osten Nigeria, Central Bank of Nigeria, 10 Naira o. D (1973-78), Sig. 3 selten. P. 17c, Erh. I.
Banknotes of Africa and the Near East Nigeria, Central bank of Nigeria, 10 Naira o. D (1973-78), signed. 3 rare. P. 17 c, condition I.