WW1 German 9mm bullet base stamps

I believe a list of what these mean was posted on here a while ago, but I can’t seem to find it. Someone on another forum has some and he wants to know what they mean. They are:

“278 G”
"Ge"
Gothic lower case n (I think)
Gothic upper-case M or W

Aren’t the first two both Gustav and Genshow? I can’t seem to remember the second two.

As far as I know:
Ge = Gustav Genschow (Durlach)

Grtz
Jaco

278G is from DWM and is their catalog number for an 8 gram round nose FMJ bullet.

Falcon, do you have a picture???

Grtz
Jaco

Here is a photo of them all:

N = RWS
M= Munitionsfabrik Spandau

Rgds,
Dutch

Thanks all for your input.