Presentation of credentials of the chargé d´affaires (Iván Csekonics): 11/2/1920, Information provided by Hungary.
Date of the foundation of the Hungarian Embassy: 22/9/1921, Information provided by
Hungary.
The Polish envoy (Jan Szembek) presented his credentials to the regent of Hungary (Miklós Horthy de Nagybánya) in Budapest: 17/11/1921, Information provided by Poland.
A note from the Hungarian ambassador in Moscow (István Gombó) to ambassador Henryk Raabe, with information about the consent of the Allied Control Commission in Hungary (headquarters in Vienna) to establish (resumption - reprise) diplomatic relations between the two countries and, therefore, about Hungary's readiness to contacts with Poland and exchange of representatives: 02/3/1946, Information provided by Poland.