Silver Dish from 1805

Hi All,

This piece which is immaculate condition has been in our family for over 200 years. I have no idea about the history, value or even what the purpose of the dish is. The hallmark is almost impossible to photo so I imagine I will have to take a scratching of this although I am not sure whether there is a certain way to do this?

Please see attached photo’s.

It is dated 1805 at the bottom. There is a 3 letter acronym by the look of it which is T.A.D.

Does anybody have any idea what T.A.D. is?

The halmark has 4 symbols. 1 is “xxx”, the next looks like a number which I cannot make out to clearly but it looks like 2 numbers (maybe even 3 if the edge has faded “13” or similar, the next looks like what I can best describe as a “W” and I have no idea what the last one is supposed to be.

If anybody can give me any information, it would be greatly appreciated.

Thanks

Oakley
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Possibly Dutch. The three cross mark might be the town mark for Amsterdam.
Maybe a drawing of the marks ?