Wallace Silver hammered finish Small Bowls

Hi! I have searched everywhere for bowls like these, but to no avail! I know they are made by Wallace, and I'm pretty sure they are silver. They are a tarnished, they ring when I flick them and ice melts super quickly on them. I have no idea what the inside is made from. Maybe porcelain? I think they are berry bowls, but could be wrong. Can anybody help me with any information at all? Maybe an era to look for or what these might be made of? I thought that sterling was supposed to be stamped sterling, but these aren't stamped.

They measure 2" tall and about 5" in diameter.

Thanks in advance!