Can anyone help me ID this plate. I have tried looking up the makers mark which is a Swan with a crown above its head and at the bottom is a triangle of water with the initial M on left and B on Right. The M has a slightly curved right hand upright. [img size=345]https://kovels.com/media/kunena/attachments/legacy/images/PLate1.jpg[/img]

The ovals are holder for eggs and are shaped into the plate.