Röntgen received the first Nobel Prize in Physics in 1901, awarded for his 1895 discovery of X-rays — which he initially called "X" precisely because he didn't understand their nature. North Korea issued commemorative aluminium pieces throughout the early 2000s targeting the foreign collector market; domestic circulation of such coins was essentially nonexistent. The centennial of the Nobel Prize provided the hook for this series.
Röntgen received the first Nobel Prize in Physics in 1901, awarded for his 1895 discovery of X-rays — which he initially called "X" precisely because he didn't understand their nature. North Korea issued commemorative aluminium pieces throughout the early 2000s targeting the foreign collector market; domestic circulation of such coins was essentially nonexistent. The centennial of the Nobel Prize provided the hook for this series.