Hi,
Strictly speaking it`s not coin silver (.900 or 90% silver alloy) but at least 11 ounces of pure silver in every 12 troy ounce, or a silver fineness of 91.7% (11/12 = 91.66%) silver content.
The lion`s head facing left is for .800/1000 fineness.
There was the same mark facing right for .950.
Very unusual to have rather rare Kingdom of Sardinia mark on two American spoons by different,unrelated makers.
Spurious combination marks.
For faked A. E. Warner marks see here:
http://www.nutmeggraters.com/fakedAmeri ... arner.htmlI suggest to have the spoons tested for exact composition of the alloy - there are electronic testers now.
Never underestimate fakers.False punches with full lettering are not cheap to make and profitable only if struck on whatever lucrative silver item available.The problem are original marks, especially British because there are 4 or 5 of them to be erased or obliterated, which is not easy.
So, the best candidate is silver from across the globe with rare marks or no marks at all - no need to hide them.Would you have bought the spoons with Kingdom of Sardinia Turin unidentified marks (till now) ? I don't think so.
Regards