Very interesing thread about this little-known topic! Thanks to all for sharing pics!

Somewhere on Internet I found this pic (I apologize to owner for sharing this pic, but I forgot the address of this site and could not find it once more).
It seems in 1936 existed two branches of armed units in RVM - Bahnschutz & Bahnpolizei. This shoulder board seems to be for Streifer of Bahnpolizei - in UM from 16.6.1936 I found some data to it - link to that text is here:
http://www.tenzor.cz/lbsr/dr/uf/sch_pol-wchtm.html
This shoulder board is very specific - there are
NO inner cords, only outer "V" cords and in place of inner cords the black cloth underlay only!!!

nrt1q.jpg (27.38 KB, 327 downloads)