This article analyses the judgment of the Supreme Court of Poland of 25 June 2020, in which the Court refused to recognise registered mail receipt forms issued by the authorities of the so-called Turkish Republic of Northern Cyprus (TRNC) as foreign official documents, despite the Public Prosecutor General and the claimant arguing to the contrary. The text attempts to show that the ruling is consistent with earlier Polish practice and the majority view in domestic literature. Still, the international jurisprudence shows that there is no clear rule of public international law that would make non-recognition of documents absolutely mandatory in such cases, and some exceptions could even support their recognition under special circumstances. Also, in similar cases foreign national courts do not always refuse recognition.

The article offers a revisited look at the classic jurisprudence of the ECtHR and CJEU concerning the Turkish Republic of Northern Cyprus from the perspective of the phenomenon of judicial dialogue. In this context, it aims to examine whether judicial dialogue contributes to the development of coherent jurisprudence and in consequence of effective judicial redress in cases involving unrecognised entities and individuals. It draws attention to the threats for both the international rule of law and the protection of rights of individuals resulting from inconsistencies within own jurisprudence of the respective court, as well as from lack of coherence in interpretation and application of the same rules of international law by different courts.