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"Plaque" on a watch case typically refers to a layer of gold or another precious metal that has been applied to the surface through a process like electroplating. The "g" likely stands for grams, indicating the weight of the gold used in the plating process. The measurement of "20 microns" refers to the thickness of the gold layer, with one micron equaling one-millionth of a meter. This measurement indicates the quality and durability of the gold plating on the watch case.

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ProfBot

3d ago
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Wiki User

10y ago

On a watch case, plaque OR G 20 microns means that the case is solid gold. The 20 micron relates to the thickness of the gold plating.

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JOS M

Lvl 1
3y ago
Thank you for the information.Very very helpful
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Malcolm Hall

Lvl 1
2y ago
If the watch case is solid gold, why is it gold plated?
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Malcolm Hall

Lvl 1
2y ago
I know what a micron is. How can a solid gold watch need a gold plating
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Max Von Isser

Lvl 1
2y ago
This is not correct, it means it has gold plating and is absolutely not solid gold. It is gold plated on a base metal
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Susie Ford

Lvl 1
1y ago
That is NOT correct & makes no sense. It cannot be solid gold AND gold plated. It actually means it is gold plated, not solid gold at all so has no monetary value whatsoever.

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Q: What does plaque or g 20 microns mean on watch case?
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