War Merit Crosses with Swords x3. Standard Crosses? One Fake?

[terry.h]

Hi,
Can anyone please give me some information about the 3 War Merit Cross attached. I can only find a makers mark on one (on the ring) and it is 63. There don't seem to be any makers marks on the other two..... but is it possible to tell the makers from the photos?
One looks to be in very good condition, one is a bit corroded by oxidation and the third one.....which actually came with the correct documentation looks a bit suspicious? Is it a fake or not such a good example? It actually came with correct paperwork, but I know that doesn't mean a thing. I do not know about medals and all I want to do is sell them, but I don't want to sell a fake!
Any advice would be greatly appreciated.
Thanks in advance,
Terry.

[terry.h]

b)

[Waffe]

Hello:
The bronze, marked one is original- no doubt.
The 2 zinc ones appear to fine to me (and the ribbons, as well).

[schönbeck]

All good