Thank you in advance.

Oel,oel wrote:Hi welcome to the forum,
I believe it to be Portuguese silver, this particular assay mark for the city of Porto also known as Oporto, used 1843/1853.
The zig-zag line is made by the assayer to determine the silver fineness, I believe fineness could be above sterling standard (925/1000) and perhaps minimum 958/1000 (95.8% pure silver). Could you show us an image of the complete bowl and an clear enhanced image of the marks.
Oel.
It's hard to decipher but it appears to be EW?oel wrote:Thanks for the images, nice silver bowl, could you spell out the maker’s mark initials?
Perhaps other forum members will be able to tell you more.
Best,
Oel.