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The IS on Wm Rogers Silverware stands for International Silver.
yes
The crown is the maker's mark or hallmark identifying the company that made the product; the number 3220 is probably the pattern number. If this is silver tableware of some sort, you are probably describing a silver plated item, perhaps from FB Rogers.
The 4009 on a Wm Rogers silver platter means that it is #4409. Wm. Rogers numbered his work. Rogers was a master silversmith in the early to mid 1800s.
Wat does 838 mean on silver
It's WM Rogers and Sons, not WA. Google WM Rogers and Sons.
It means International Standard of silver plating thus identifying your piece as silver plate vs. silver
The "1847" in 1847 Rogers signifies the year that the process of silver plating was discovered. Shortly thereafter Rogers Brothers began manufacturing silver plated wares.
I have a 1847 Rogers Bros stamp I S what does this mean ? and what is it worth?
The mark for sterling silver is 925 which indicates 92.5% silver content.
international silver co. but not meaning its a sterling still might be plate
866 means silver plated sorry