Hi – it’s a Friedrich Order, German: "Friedrichs-Orden" or "Friedrichsorden".
The Friedrich Order was an order of merit of the German Kingdom of Württemberg. It was instituted on the first of January 1830 by the second king of Württemberg, Wilhelm I in remembrance of his father, King Friedrich I.
1870 a knight’s cross Ist Class and a military division with swords were added.
The ribbon was skyblue.
In 1918 the end of the monarchy meant the abolition of the order.