WWI German Officer's Shoulder Board Gold Braid on Blue-Grey.

[leigh kitchen]

Can anyone tell me which unit this shoulder board belongs to please?
The braid is gold coloured with blue-grey and red thread detail, the backing fabric is blue-grey.
Metal devices have been mounted on it but have been removed.
Presumably it's German, circa WWI although it reminds me of the WWII era German army specialist civilian "sonderfuhrer" insignia.

[MH331]

Possibly a Saxon Train (logistics) officers board. Its difficult to make out the colour of the chevrons within the braid.

[leigh kitchen]

Thanks - the chevrons are lightish blue and red.