ARTICLE 15AUTHENTICATION
Any document or any copy of documents transmitted for the purposes of extradition shall be exempted from authentication or any other formality unless expressly required by the provisions of this Convention, the European Convention on Extradition or the Benelux Treaty. In the latter case, copies of documents shall be considered to be authenticated when they have been certified true copies by the judicial authorities that issued the original or by the central authority referred to in Article 13.