In your post-1886 German silvermark listing, the third unknown ("looking for info") marking imaged, which shows an AWS in a rectangle is possibly the marking for "A. Werner & Soehne, Berlin". Hopefully the image below, of one of their invoice headers, will help - please note the document/image is not mine, so if someone has a problem please PM me and I'll remove it.
Regards
Mike
![Image](http://members.iinet.net.au/~datumgeo/AWS-logo-invoice.jpeg)