This is an interesting group.
From what I see, I have two remarks:
- It is not the Hindenburg cross that sports an incorrect ribbon, but the Lübeck ribbon that has the incorrect cross. What I mean is that the Hindenburg cross should not be placed there at all: according to the 1934 regulations, all the veterans' associative medals/crosses were banned from the Ordensspangen and had to be replaced by the one and only Hindenburg cross. We can see as well that the Hindenburg cross disrupt the continuing line formed by the other three crosses/medals.
- It also seems that one medal or cross is missing (see the two empty slots on the back). The Hindenburg/Lübeck plate has been placed in the middle to fill partly the gap.
All in all, I guess there has been some changes in this group. It should look as follows: starting from left to right, the EK2 comes first, followed by the Lübeck cross, then either a long service cross/medal or another official cross/medal or a veterans' commemorative cross/medal + Kyffhaeuserbund medal and finishing the line with the Kyffhaeuser-Verdienstskreuz. Please also note that each ribbon should overlap the one placed on its right.
All the best.
Jean-S.