It looks ok Peter but before you commit, try a search here and compare to other Panzerkampfabzeichen from this maker.
Looking for LDO marked EK2s and items relating to U-406.....
I think its too much for a such a common variant like this, esspecially in this condition.
Searching for anything relating to, Anton Boos, 934 Stamm. Kp. Pz. Erz. Abt. 7, 3 Kompanie, Panzer-Regiment 2, 16th Panzer-Division (My father)