Portrait of an Unknown Prince of Saxe-Gotha, possibly Frederick III, Duke of Saxe-Gotha-Altenburg (1699-1772). Half-length portrait, facing the right, his head turned to the spectator. He wears blue velvet and ermine robes over a cuirass and uniform with embroidered cuffs. His wig is powdered.Dark background with swag. [Unidentified painter / Royal Collection RCIN 403535 -- Public domain -- http://commons.wikimedia.org/wiki/File:Portrait of an Unknown Prince of Saxe-Gotha, possibly Friedrich III - Royal Collection.png]