Unknown Cross Hallmarks

1

Hello!I encountered some antique hallmarks wich I have trouble to identify.Any help would be deeply apreciated!

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2

GD with the symbol between in a lozenge is a French silver maker’s mark. I can’t identify it. There should be other marks but I don’t recognise either of the other 2 marks in your picture as part of that French marking system.

Phil

3

Thank you for the reply!
Here are some better photos of the marks.
Unfortuanelly,they are faded.
I’m curious why there is a 7 hallmark and also the number 1 marked above

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