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The "IS" stamp on a silver spoon likely stands for International Silver Co, which was a prominent American silver manufacturer. The stamp helps to identify the manufacturer of the spoon and can also sometimes indicate the silver content of the piece.
how heavy is the average sterling silver spoon
most likely its sterling silver which isn't pure silver and it depends on the rarity/collector value of the spoon. Probably not much more then $5 or $10 for a basic sterling spoon
how much sterling silver is in one place setting
Generally, pure silver is much heavier than a silver plated object. Pure silver objects such as spoons will also have a stamp somewhere on it that will say "925" or "925/1000." This shows you that the spoon has a silver content of 92.5 percent. Silver plated objects will not have this stamp.
dates back to Span. American war
The value of a sterling silver pin spoon made by Tilden Thurbers Co. varies greatly with condition and style. Many of these spoons sell for about 40 to about 80 dollars.
International silver Co, US, used an Indian head mark.
925 on any silver object should mean that it is .925 fineness, also known as Sterling Silver.
The phrase "pearl silver" was stamped on flatware that was actually nickel silver, that is made of copper, zinc and nickel with no silver content.
I just bought one at a antique store for five dollars.It has a wooden handle. On the internet the same one was selling for 27 dollars. Nickel silver has no silver in it. Copper,nickel and zinc. Mostly copper. It is also known as German silver.
Rogers made lots of silver plated items during the 20th century and most are not very valuable. They also made some sterling silver items, and these are more valuable. If your salt dip set is sterling silver, it will be marked clearly with the word Sterling. If this word is not on the salt dip, the spoon and anything else, it is silver plated.