Shoulder Board Help

[Uhlan]

I picked up this pair of shoulder boards this past weekend at a flea market. They were with some other WW1 items that appear to come from the same veteran. I believe they might be model 1915 pioneer shoulder boards from a tunic. Any help to ID these will be appreciated.
Andy

[Chip M]

They are a nice enlisted M15 issue pair of pioneer straps from the 34.Pioneer Battalion or the 34.Pioneer Park.

Chip