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You cannot calculate the volume of the platter with the measurements you describe.Water displacement method is used to measure exact volume; a submerged object displaces a volume of liquid equal to the volume of the object.But one cannot find graduated cylinder of the size to submerge this platter....

Of course it wouldn't be titanium but probably some alloy of aluminum, tin, copper or nickel....

Hi, Thermo portable XRF devices are reliable according to a study and test but there are a few exceptions to this study. They do not recommend using portable XRF analysis on gold-filled jewelry, gold bars, and bullions. If it is used, they strongly suggest that a secondary analysis is done just to ...

Hi, Please read what has been written. XRF test does not work on silver plated items. A silver test, including an acid test, only works if you remove some of of the top coat of the plated silver. Make sure you scratch deep enough. Why not have it tested by an auction house, pawn shop or billion dea...

Thank you all so much for your suggestions, and silverly thank you for the Crown Silver mark. That is definitely like the mark on my platter, it's a more sophisticated version of it anyway. The mark on my platter looks something like a caricature to me. To further my investigation, I started to reme...

Thank you both for the replies. But just for my own clarification - Isn't having a layer of silver and being silver-plated the same thing? I don't want to do any destructive tests on this piece, but the XRF device indicates sterling. I've also done a simple ice cube test, for what that's worth. The ...

Why did this post get moved under Silverplate? I am sure it is sterling.

Hello, I have a 13" silver platter with only a maker's mark, (please see the photos below. My platter was tested with a Thermo Scientific Niton XL2 precious metal instrument and the analysis verified that it is sterling silver. I believe the analysis is accurate as it also lacks characteristics...

Thanks for the fast reply! I followed the link to the thread about the Continental Silver Co., but like dognose who posted in that thread, I'm not convinced the mark belongs to them. The mark on my piece doesn't look anything like the marks used by Continental Silver Co., who seemed to always mark i...

Hello, I have a 13 inch silver platter (photos attached), I have been told it is sterling, but there is only one mark on it and I am unable to identify it. I have seen others here describe this mark but the posts are old and the photos no longer load, in each case no one had replied. I have posted t...