A1 is an English term for silver plate. Items with A1 are not sterling silver.
A1 is a British electroplating hallmark and means superior quality. As this hallmark is for silver pieces and there is no mark allowed for gold plaiting it is most likely that you have a high quality silver plated piece that was further plated with gold. This is allowed under British law.
A1 is an English term for silver plate. Items with A1 are not sterling silver.
The Hallmark, Gilbert Marks....london 1861- 1905
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The mean of the numbers a1, a2, ..., an is equal to (a1 + a2 + ..., + an)/n. This number is used mostly as the average. It is called the arithmetic mean.
Not quite sure what your asking but hallmark is a company that makes different cards (I'm sure you know) but a hallmark can also mean
It means that its 2500
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Date stamp of 1890
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