Finally i got my hand on this Flanders beaty! I've been looking for this for about 3 years
The Cross was instituted on 13 September 1921 by Admiral Ludwig von Schröder, the former commander of the Marinekorps Flandern and its Veterans‘ Association in honour and remembrance of former members of the Corps. In August 1914 the German High Command decided to create an expeditionary force of Marines in Flanders.
By November 1914, two divisions were in place, to be joined by a third in June 1917. The Corps was involved in heavy fighting, demonstrated by the ten bars ( my have 4 of 10, others are Durchbruchsschlacht, Durchbruchsschlacht 1918, Flandernschlacht 1917, Luftkrieg, Seekrieg, and Yser ) associated with the medal.
Althought the Somme is not in Flanders, members of the Marine Corps were involved in battles there.
The medal was officially suppressed in 1934 with the issue of the Cross of Honour of the World War (Ehrenkreuz des Weltkrieges), popularly known as the Hindenburg Cross but the Flanders Cross was widely worn after this date with tacit approval. In all only some thirty thousand Crosses were issued and it is now quite hard to find.
So yes I'm happy!