help t ID shoulderboards

[charteroakbooks]

Hi, Can anyone help ID these shoulderboards?
Rank, branch, date of use, etc?

Thanks,

Mike

[HPL2008]

They are pre-February 1941 pattern shoulder boards from the Deutsche Reichsbahn [German National Railways], worn by Beamte der Besoldungsgruppen 9a und 9 [officials of pay groups 9a and 9].