I have been using your site to help me to identify marks. I thought I might post two that you can add to the list. The first is the mark of the Stadsguardien maker, CHRISTIAN F. HEISE, similar to a logo. This is on a fish server with the date of 1911. The second mark on that same piece is for Heimburger. See the photos attached.
You are free to use my photos in your identification section to help others to identify their items.