According to: https://web.archive.org/web/20070901043355/http://ww2.tvp.pl/2739,20050927249915.strona https://web.archive.org/web/20070901043355/http://ww2.tvp.

According to: https://web.archive.org/web/20070901043355/http://ww2.tvp.pl/2739,20050927249915.strona https://web.archive.org/web/20070901043355/http://ww2.tvp.pl...: "The world learned the truth about the breaking of Enigma and the role of Poles only in 1973", so the interview is after that moment. On 1973-09-23 he disclosed his identity to journalists: https://marian-rejewski.pl/pol-wieku-temu-rejewski-ujawnil-sie-jako-osoba-ktora-rozszyfrowala-enigme/ https://marian-rejewski.pl/pol-wieku-temu-rejewski-ujawnil-s... so the interview was very very likely filmed after 1973-09-23. + this is supported by his physical appearance. It could be around 1974 (near the peak of the public popularity of the decryption of Enigma). The video interview was published by TVP, so maybe in their programmes of end of 1973 or 1974 there may be such info. There is also a known interview in 1978: https://www.globalspec.com/reference/62853/203279/a-conversation-with-marian-rejewski https://www.globalspec.com/reference/62853/203279/a-conversa... So most likely 1974 (or very close to that). Possibly more info here: https://marian-rejewski.pl/kalendarium-2/ https://marian-rejewski.pl/kalendarium-2/