A printer's design for an unissued Foreign Exchange Certificate from Angola, dating back to the late 1980s. Highly unusual and not listed in the Pick catalog, these were probably prepared as Angola was going through inflation in the late 1980s, which eventually led to the revaluation of the Kwanza in early 1991. Obviously not put into production, and completely different from anything ever issued by Angola. Highly unusual and the first we have seen.