Search found 68 matches: xrf

Searched query: xrf

by Gmgs silverplate
Mon Apr 25, 2022 6:55 pm
Forum: Far East
Topic: Is this fake English silver?
Replies: 10
Views: 497

Re: Is this fake English silver?

... marks, so naive. Regards Amena Hello amena. Kind regards. I took the spoons to my local coin shop and they said it was shooting sterling on their xrf gun. I refused to allow them to cut into the spoons and do the acid test. There was a deep chop mark in one of them, I had him focus on that area, ...
by diedonner
Fri Apr 22, 2022 10:48 pm
Forum: Silverplate Trademarks - Worldwide
Topic: Mark on silver platter please help identify
Replies: 16
Views: 291

Re: Mark on silver platter please help identify

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, ...
by diedonner
Fri Apr 22, 2022 10:40 pm
Forum: Silverplate Trademarks - Worldwide
Topic: Mark on silver platter please help identify
Replies: 16
Views: 291

Re: Mark on silver platter please help identify

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 ...
by diedonner
Fri Apr 22, 2022 10:36 pm
Forum: Silverplate Trademarks - Worldwide
Topic: Mark on silver platter please help identify
Replies: 16
Views: 291

Re: Mark on silver platter please help identify

... Can anyone tell me if my analysis here is flawed and doesn't apply? For now, I'm convinced it's something other than sterling, despite the XRF measurement that said sterling.
by oel
Thu Apr 21, 2022 11:25 am
Forum: Silverplate Trademarks - Worldwide
Topic: Mark on silver platter please help identify
Replies: 16
Views: 291

Re: Mark on silver platter please help identify

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 ...
by diedonner
Thu Apr 21, 2022 8:45 am
Forum: Silverplate Trademarks - Worldwide
Topic: Mark on silver platter please help identify
Replies: 16
Views: 291

Re: Mark on silver platter please help identify

... - 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 same size cube set on this platter and a similar size ...
by oel
Mon Apr 18, 2022 6:37 am
Forum: Silverplate Trademarks - Worldwide
Topic: Mark on silver platter please help identify
Replies: 16
Views: 291

Re: Mark on silver platter please help identify

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, ...
by diedonner
Sun Apr 17, 2022 10:21 pm
Forum: Silverplate Trademarks - Worldwide
Topic: Mark on silver platter please help identify
Replies: 16
Views: 291

Re: Mark on silver platter please help identify

... I took the platter to a local pawn shop here (I'm in Miami, Florida by the way) and they tested it with one of those handheld devices (Thermo XRF I think?). The guy just hovered the nose of this gun over the piece for about 15 seconds until a reading appeared on the digital screen. According ...
by TripleLock
Sat Apr 16, 2022 9:59 pm
Forum: Mystery Objects
Topic: Large spoon with spike handle?
Replies: 2
Views: 108

Large spoon with spike handle?

... buy up bits of silver at thrift shops and garage sales has been answered here, but these unmarked, 8.5 inch long (coin silver? I need to visit the xrf machine) spoons have me stumped, and I thought I might ask. I've been finding the variety and uses of all the myriad of silver eating utensils to ...
by Aguest
Wed Feb 02, 2022 4:34 pm
Forum: London Hallmarks
Topic: Crossley pitcher?
Replies: 7
Views: 709

Re: Crossley pitcher?

... was not obliged to return it? ::::: If this pitcher does happen to test lower than the sterling standard of 92.5% (which could be done with an XRF testing device) then that would be interesting and it could support the theory of Colonial Indian origin. :::
by MGArgent
Thu Nov 11, 2021 3:02 am
Forum: Middle East
Topic: Silver plated silver Persian salt cellars
Replies: 2
Views: 1570

Re: Silver plated silver Persian salt cellars

... some of the copper never fully melted and mixed in with the alloy as it has a slightly higher melting point than silver. I was surprised when the XRF result aligned with the marks and showed just over 40% silver content, and it seems in the case of this spoon that is was silver-plated in order ...
by amena
Sat Jul 03, 2021 8:46 am
Forum: Silver Plate Trademarks - Single Image
Topic: Strange English hallmark on a spoon
Replies: 9
Views: 3226

Re: Strange English hallmark on a spoon

I would like to clarify what I said about the XRF machine and their operators. The highest silver standard that was ever used was the Britannia standard, 95.833% by weight silver. https://en.wikipedia.org/wiki/Silver_standards The use of 98% silver ...
by SilverBuggy
Sat Jul 03, 2021 6:50 am
Forum: Silver Plate Trademarks - Single Image
Topic: Strange English hallmark on a spoon
Replies: 9
Views: 3226

Re: Strange English hallmark on a spoon

... I clearly need to bring the spoon to some other places to be tested. I am very worried. Assuming that teaspoon was actually tested with an XRF machine and the result was actually that the teaspoon is made of a 98% silver alloy, what confidence can we have in those machines and who is operating ...
by amena
Mon Jun 28, 2021 2:02 am
Forum: Silver Plate Trademarks - Single Image
Topic: Strange English hallmark on a spoon
Replies: 9
Views: 3226

Re: Strange English hallmark on a spoon

I am very worried. Assuming that teaspoon was actually tested with an XRF machine and the result was actually that the teaspoon is made of a 98% silver alloy, what confidence can we have in those machines and who is operating them?
Best
Amena
by SilverBuggy
Sun Jun 27, 2021 9:00 pm
Forum: Silver Plate Trademarks - Single Image
Topic: Strange English hallmark on a spoon
Replies: 9
Views: 3226

Re: Strange English hallmark on a spoon

There is the update. I took the spoon and another unmarked cake lifter to a bullion shop. The guys there tested both with their XRF machines. It turns out that the said spoon is 98% silver and the unmarked cake lifter is 54%. I posted my question here because when I put the spoon on the ...
by Generic_Lad
Mon May 10, 2021 12:14 pm
Forum: German Silver
Topic: Any ideas on the hallmarks on my plate? Hanau?
Replies: 4
Views: 2485

Re: Any ideas on the hallmarks on my plate? Hanau?

Thanks! That helps!

Any ideas though on the crowned G? Hoping to take it to a place with XRF to get a better idea on the metal its made out of
by MMollari
Fri Jan 22, 2021 9:42 am
Forum: Other Countries
Topic: Large serving tray/pot with lid (and possibly hot water bassin), 18thC Hungarian?
Replies: 32
Views: 3694

Re: Large serving tray/pot with lid (and possibly hot water bassin), 18thC Hungarian?

I would love to know the composition too, unfortunately I don't know anyone who has a handheld XRF, which is probably what is required to test this without damaging it? The guys in Copenhagen I normally sell scrap to have one of the XRF chamber models, but it is not big ...
by Aguest
Wed Dec 23, 2020 8:36 pm
Forum: Russian Silver
Topic: Basket ID
Replies: 11
Views: 1922

Re: Basket ID

... and handle on top of the base was made in Germany :::: Could it be a combination of authentic original silver parts combined into one basket? ::: XRF is the only way to get any further reliable data :::
by MGArgent
Wed Sep 16, 2020 2:37 pm
Forum: Asia & Middle East - Single Image
Topic: Unmarked Persian (Iran) Cigarette Case
Replies: 5
Views: 3815

Re: Unmarked Persian (Iran) Cigarette Case

I should also add that both store owners explained to me that XRF analyzers can only penetrate a small distance past the surface (a few microns), and are routinely fooled by silver-plated items which have a layer of silver plating that is thicker than the ...
by MGArgent
Wed Sep 16, 2020 2:16 pm
Forum: Asia & Middle East - Single Image
Topic: Unmarked Persian (Iran) Cigarette Case
Replies: 5
Views: 3815

Re: Unmarked Persian (Iran) Cigarette Case

... presence of the elastic band would also indicate the piece was made somewhat more recently? I went to a second shop thinking they had a handheld XRF that could analyze my larger pieces which didn't fit in the bench top XRF at the first shop (unfortunately there was a miscommunication and it turned ...

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