Keywords: Christian Schilbach (zugeschr.) - Porträt des Herzogs Friedrich I. von Sachsen-Gotha-Altenburg.jpg attributed to 1711 Oil on canvas cm 243 149 Schlossmuseum Schloss Friedenstein 13850802 other versions PD-old-100 DEFAULTSORT 1720; Friedrich III of Saxe-Gotha-Altenburg Christian Schilbach Schlossmuseum Gotha Frederick I Duke of Saxe-Gotha-Altenburg 1711 paintings in Germany 1711 oil on canvas paintings Portrait 1711 portrait paintings from Germany Male 18th-century oil on canvas paintings in Germany 18th-century oil portraits of standing men at full length wearing armour 18th-century portrait paintings in Germany Allonge wigs in paintings Military helmets in portraits People with bow ties in art Portraits holding baton Posthumous portraits |