Very nice! I only have one uniform that can support a lanyard but it has a small hook instead of a button and I'm guessing by the size of the threads it was definitely a button. Would you happen to have any idea as to why there would be buttons on both sides? There are threads on the outer edge of the shoulder on both sides which appear to have accommodated a button.I have one on my GGR# 3 Waffenrock
but I will need help from another family member to hold the strap up
so that I can try to shoot a photo of the button for you
This was a private purchase Waffenrock that was tailor made View attachment 44600
Steve