Need help with unit markings on a butcher blade bayonet

[K Bandow]

Gentlemen,

While looking through my father's WWI German items, we noticed these unit markings on his bayonet scabbard. Can anyone help decipher what they are?

Thanks!
Karl Bandow

[Gerdan]

The last line I read:

" S. Ar. II 322 " - " S " could mean "schwere" and " Ar. " Artillerie

In the middle: " S. Ar. I. 4 37 "

First line I read " S. M. V. 37 "

Gerdan

[John Allen]

unit mark

IMHO the S. Ar. stands for Schutzpolizei Arnsberg which is a Weimar/TR police marking.