Unknown Silver/Silverplate Maker's Mark on Butler's Tray

[siggy1]

I am a newbie and am re-posting this in American Silverplate because my pictures were dropped from the first post due to technical problems with the host site. Since I don't know of any way to repost the pictures on that listing again, and they are necessary for identification, I have re-submitted my post with pictures. I need your help to identify this Mfg Mark please. I have also listed it in the "Other Silverplate" Forum for more exposure. The tray is 21 1/4 X 12 1/2" and weighs 2lb 12oz (1260 Grams) of Silver/Silverplate, I'm not sure which. It stands on 4 small Victorian feet. I have included pictures of the tray and a picture of the Mfg mark. The images are clickable for enlargement. I would love to know what each symbol in the mark stand for as well as the maker of the tray. If anyone out there has any ideas, any information at all will be much appreciated. Many thanks! siggy1

Butler's Tray in Question:

Maker's Mark: