Too me, it looks like a roundabout with the collar turned down (pressed?), but only 8 buttons instead of the usual 9.
Always like the cut\drape of the trowsers in these 'new' uniform pictures....note the hem line on the heel side of the trowsers....
Horniste! Blas das Signal zum Angriffe!
"But in the end, it's the history, stupid. If you can't document it, forget about it. And no amount of 'tomfoolery' can explain away conduct that in the end makes history (and living historians) look stupid and wrong. "