It is the story of the theft of Polish works of art during WWII. The authors present two priceless antiquities lost during the war – Veit Stoss Altarpiece and the Portrait of a Young Man by Rafael Santi’s. Karol Estreicher, thanks to the extraordinary determination, regained the altar for Poland. Unfortunately, the fate of the portrait, the most valuable work stolen from Polish museums, is still unknown to this day. Ongoing searches aimed at returning to the country even the smallest pieces of the lost heritage have been made continually from the end of the war to the present day.