This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Kopernikus Nikolaus Reuner Portrait. de Ausschnitt aus dem in Reuners Icones abgebildeten Holzschnitt Icones Nicolas Reuner PDArt Uploaded with Nicolaus Copernicus portraits
Page 2023 Free-images.com. All images are Public Domain