If I am correct it's sterling, from Birmingham, made 1900. It has a gold wash inside.
Please let me know if the photos aren't good enough. I've never had any silver to photograph before!
Questions:
1) Am I correct about the date, place mark?
2) The maker's mark- the impressions aren't that great but I think the lettering is "RC & CO" or "BC & CO". Anyone?
3) It embarrasses me to ask but would you consider this to be Art Nouveau?

