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 Replies: 21 / Views: 2,969 |
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New Member
Germany
7 Posts |
I need your help with the determination of a Chinese coin. I'm not sure if it is a fake. For me it looks very good and in good condition. But the stats are not like here: https://en.numista.com/catalogue/pieces3847.htmlNot magnetic. Weight: 26.74 g Diameter 39.2 mm Thickness: 2.5 mm   |
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Pillar of the Community
 United States
2843 Posts |
I couldn't say much about this coin's authenticity, but the discrepancy in the stats would not concern me. They seem to be pretty close to the Numista stats.
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Pillar of the Community
United States
3343 Posts |
"Two minutes ago I would have sold my chances for a tired dime." Fred Astaire
Edited by thq
11/02/2022 3:00 pm
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Moderator
 United States
34413 Posts |
@dave, what is the specific gravity of this piece? That will help to determine the alloy. Thx.
"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
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New Member
 Germany
7 Posts |
Thank you guys. This helps me alot already.  @Spence: you mean the weight? My letter scale says 26.74 grams. |
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Moderator
United States
34413 Posts |
@dave, knowing the weight is correct is helpful, but if counterfeiters have used a different size then they can get away with using a silver-colored alloy to save money. Consider it to be one tool for assessing whether a coin is real or not. Here is an old CCF thread with information on how to determine specific gravity. http://goccf.com/t/39666"If you climb a good tree, you get a push."
-----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed."
-----King Adz
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Pillar of the Community
United States
1915 Posts |
The second spot check I do, if the coin is supposed to be silver and not attracted to a magnet, is to look for any reaction indicating if it is diamagnetic or not.
To put it this way: if the coin cannot be picked up with a magnet, it really doesn 't tell me anything that's helpful.
So various other testing methods using very strong N-52 magnets in large & tiny sizes can be very useful.
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Pillar of the Community
United States
878 Posts |
Where/from whom did you get it? With these coins that makes a huge difference.
Compare the dragon's face on the coin you have with an authentic coin. The difference is quite stark with the details being a little too primitive compared to an authentic one.
With a circulated coin you'd also expect some wear to the face of the dragon.
To me, it does not look authentic.
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Moderator
Australia
16832 Posts |
I have found that, very often, "the camera doesn't lie" when it comes to the colour of doubtful Chinese dollars. They may look silvery in hand, but they often show a greenish or yellowish tint on the camera. As this coin does.
That, plus the general wrong-ness of the appearance, indicates it is a replica.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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Pillar of the Community
United States
1915 Posts |
A number of my fakes look greenish & grayish. Many others sort of dirty ash browns, grays & more.
Not so many yellowish.
Many variables affect color, so much so, color is one aspect I've struggled with for quite a while.
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New Member
Germany
7 Posts |
The source of the coin is unknown, it is from a heritage. Which indicates for me this could be a counterfeit, I have four of them. All look a bit different and weight is also different. Weight: 26.74, 26.76, 26.83 and 26.86 grams  |
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Pillar of the Community
Hong Kong
1270 Posts |
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Pillar of the Community
United States
878 Posts |
Quote:
The source of the coin is unknown I'd be very careful at this point. The three other coins do not look right. They don't look like silver to me and I agree with the other comments about the color and toning patterns. If the weight is correct, you also want to check the diameter and the thickness to make sure they check out as well. |
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Pillar of the Community
United States
1915 Posts |
I checked the given measures and found them to be reasonable.
There are documented variations for the OP's piece.
The posted photo above of the four coins sort of prompts me to dig into mine and maybe post pictures & measures.
edit: I did dig up six of these, not sure if there's interest in my measures or pictures?
Edited by Albert
11/04/2022 04:56 am
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Pillar of the Community
United States
878 Posts |
Quote:
I did dig up six of these, not sure if there's interest in my measures or pictures? I'd be curious. |
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Pillar of the Community
United States
1915 Posts |
It will take a while so please be patient, here is the first. 17.62g, 39.26mm by 2.1mm Obviously low weight for this one.  This the second. 18.29g, 39.1mm by 2.1mm Another obviously low weight  Edited by Albert
11/05/2022 4:47 pm
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Replies: 21 / Views: 2,969 |
Posted 11/02/2022 2:53 pm
