Is this even silver? Assay marks

Unknown origin and date. Is this even Silver?


Whole item photo and better quality pictures, please.

The marks in the first photo are typical of U.K. pseudo-hallmarks, used on silverplate. It’s certainly not sterling from the U.K., North America, or any European country. Those would all have either real hallmarks or at least the word STERLING, and/or some indication of purity, like 925.

But yes, we really need to see larger images, not tiny little phone screenshots, especially the second image.

I think Jeff is onto the answer… There is not ‘sterling’ or stamp signifying purity. Thoughts?
I would be curious to test its density and compare.

Dimesions are 22.5in x 16.5in
Here are more photos:





These are American electroplate marks of the Barbour Silver Company (BSC EP) of Hartford CT.