This piece seems very much to be solid silver. It has two tiny square hallmarks on the front at the top of the bowl. The first shows a "G", then the side view of what appears to be a person with arms extended, and then another "G". Could this stand for GABRIEL GAY? The piece has GABRIEL GAY stamped into the back. The other hallmark (the right one), shows a "B", a five pointed star, and a "G", with "84" under it.
These marks are very tiny, but I did manage to get a couple decent photos -- not great.