Plackart from an Armor possibly of Prince Nikolaus VIII Christoph Radziwill of Poland (1549-1616) https://www.rawpixel.com/image/8932241/photo-image-art-bears-familyFree Image from public domain licenseElements of an Armor Garniture for the Field, Joust, and Tourney of a Radziwill Prince of Poland and Lithuania https://www.rawpixel.com/image/8929922/photo-image-art-bears-familyFree Image from public domain licenseField and Tournament Armor of Johann Wilhelm (1530–1573), Duke of Saxe-Weimar https://www.rawpixel.com/image/12852215/field-and-tournament-armor-johann-wilhelm-1530-1573-duke-saxe-weimarFree Image from public domain license