Obviously the middle row of ribbons are for the EK2, the KVK2 mit Schwerten and the Ostmedaille. No idea on the others unfortunately but curious to see the bottom row of ribbons are all the same. I'm sure someone will recognise them.
The EK2 is nice, a post war piece as you say, not sure if it is Souval made or not.
Looking for LDO marked EK2s and items relating to U-406.....
Its marked on the ring L/58
Top one is Lubeck Hansa war cross (red and white), firts time to see this one.
Acording to this: http://wwiihistorycenter.org/german/...es/Ribbons.jpg
The last three might be for this medal Carinthian Freedom-fighters Cross for Bravery (Krntner Freiheitskampf Kreuz fr Tapferkeit), 1918-1919