Caption:
The Order of the Black Eagle was the highest order of chivalry in the Kingdom of Prussia, founded in 1701 by Elector Friedrich III of Brandenburg.. . The ceremonial robes included a red velvet cape with blue lining, with an embroidered star on the left shoulder.. . Handcolored copperplate engraving of a knight from a religious military order from Robert von Spalart's "Historical Picture of the Costumes of the Principal People of Antiquity and of the Middle Ages" (1796).