Solid Egyptian Silver

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I have a nice old Sugar spoon with the markings of a triangular symbol followed by the words (all caps) "SOLID EGYPTIAN SILVER" followed by the triangular symbol.
I can't tell if it might be the hallmark listed first on the unidentified marks page as being on a "Handwrought A&C bowl"?. The triangular symbol is very small and it is difficult to tell if the center contains an A or if it is a different letter, number or symbol.
Any help identifying the maker, pattern, and or time period of this mark would be greatly appreciated.