Gendarmerie markings wanted

[Don M]

In researching German police markings, I have run across a number of markings on various types of pistols and edged weapons that I believe are from the Gendarmeries of several of the smaller German states. Unfortunately, there are few examples of these and very little documentary evidence. I would appreciate knowing about examples of any of the following markings and the pistols they are on (weapon numbers omitted).

G.M.S.G.
M.S.G.
M.G.
G.O.G.
O.G.K.
G.K.

Thanks for your help.