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Plaque is Plated, 925 means 925 Silver and is G 20M is 20 microns or "thickness" of the plating. The same would apply for Gold plating
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.
Its a older watch Swiss made Heloisa is manufacturer 1088 is model (?)
Marking on jewelry, watch cases, or pens. Plaque is plating, lamine is mechanically applied, such as American "Gold Filled" and 20 microns is thickness of precious metal, fondacier inox means base metal is stainless steel. For example, plaque OR G 20 fondacier inox would mean a 20 micron plating of gold (French word is OR) on stainless steel.
It has so do with the amount of gold plating is on an item lets say a watch, you take it to the jewelers and by knowing how many microns the gold layer is he can effectively polish your watch or whatever it may be with out hitting the base metal there is a sight that explains it better and gives examples of micron thickness as compared to . You just have to search it out.
One can purchase a Cartier tank watch by going to the Cartier website. The website has an online store that Cartier products such as Cartier tank watches can be bought from.
Carefully open the back of your watch. Authentic Cartier watches have the name Cartier engraved on the internal movements.
Cartier Paris quartz Swiss watch 20 - 61322
How can I tell if my cartier 2301 cc708177 real or not what do I look for
cartier watches 2301 CC708177 PRICE ?
The wrist watch was invented by Louis Cartier and Hans Wilsdorf in 1904. Cartier still makes some of the best and most expensive watches in the world.
It is virtually impossible to trace Cartier serial numbers as many dealers fail to register the watch when they sell them. Additionally if the watch was not sold in the Continent you are trying to trace it in then Cartier will not have a record for the watch unless they've had the watch in for service.