Help With Unknown Hallmark on Platter Plate

I tried doing some research on a hallmark that is on a big silver plate I came across but so far im unable to find the same hallmark. I am trying to find out if this hallmark means the plate might be 80% silver, etc. The name appears to be Christofle. There is 80 beside another symbol that I cant quite make out and on the right it says made in France. Thanks.



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Your plate is electroplated, not silver. French electroplaters’ marks are square and here you will note OC (for Orfevreries Christofle) either side of a knight chess piece. 80 [grams] is an indication of the amount of pure silver used during the coating process; it does not mean that all of that silver is on one plate. Better quality French electroplate would be shown as 90.

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