Elwan, Omaia Keywords: Germany | Banks | Collateral | Egypt | Mots clefs: Allemagne | Banques | Garantie | Egypte | ABSTRACT According to Professor Omaia Elwan, Professor at the University of Heidelberg, a first demand bank guarantee is the type of guarantee most in use among the international independent guarantees in Europe and in a certain number of African and Middle Eastern countries. This new process, resulting from banking practices, cannot be classified in the categorie of traditional securities. Professor El…