WW1 German Navy Buttons ??

[tony75]

Hello
Picked a few German buttons ( Navy)
I was wondering if these are German Or Austrian?
Pre-war or WW1 German
Thank you for the help
Tony

[aicusv]

The larger size buttons are collar rank buttons, the plain eagle is an Army for an NCO. The one with the shield I believe is for an civilian - army official (pay master or something like that).The imperial eagle one is for someone in imperial service, could be customs or colonial. Anchors and crowns are navy.
I hope someone with more knowledge will post an answer.