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 Replies: 32 / Views: 7,511 |
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New Member
 United States
33 Posts |
Just checked PCGS, all coins are real. My father is law is very happy now. Thank you all for help!
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New Member
United States
33 Posts |
By the way, PCGS gives grade from MS61 to MS65. Are those good grades? Where can I find price list online? MY father in law says MS65 has market price around 7000 Yuan in China.
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Bedrock of the Community
Australia
21788 Posts |
I think getting those coins slabbed is a good idea; you not only get accurate third party grading, but authenticated as well.
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Pillar of the Community
United States
1534 Posts |
Congrats! Sel-961, look at his previous posts and you can see they got graded. And yes, MS61-MS65 are generally considered solid grades, although it depends on what your expectations were.
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Moderator
 United States
23522 Posts |
Quote:
By the way, PCGS gives grade from MS61 to MS65. Are those good grades? Where can I find price list online? MY father in law says MS65 has market price around 7000 Yuan in China You, sir, are a winner.  This information makes me very, very happy for your father-in-law. He holds coins of great value. It's my opinion that, if it is chosen to liquidate, an auction venue such as Heritage Auctions be employed. The cost of listing with them would, I feel, be balanced in this case by exposure to the maximum number of potential buyers of such coins. The figure your father-in-law quoted for the value of the MS65 piece is not out of the question. |
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New Member
United States
33 Posts |
He says he is going to hold all these coins for his collection and he is going to send more for grading.
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New Member
United States
33 Posts |
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Pillar of the Community
United States
4846 Posts |
the holder in which the coin is encased in
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New Member
United States
6 Posts |
NEVER TRUST CHINESE BULLION COINS, i.e. Pandas. You can calculate the density of the coin if you have the thickness(height) of the coin which many sellers will not list. Then you need diameter and mass of coin.
Look up the density of the metal of the coin.
Find the density of a 5 kg solid cylinder. The cylinder is 5 cm tall and has a radius of 4 cm.
density = mass/volume
volume of your cylinder = pi*(radius^2)*height
= pi *(16)*5 = 251.2 cm^3
density = 5 kg/251.2 cm^3
=0.012 kg/cm^3
= 12g/cm^3
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Moderator
United States
23522 Posts |
Is there a reason why you have resurrected a months-old thread, started by a Chinese member of our forum to discuss Chinese coins which have no relevance to Pandas, for the purpose of putting forth equations which have no relevance to objects which are not uniformly solid while at the same time casting aspersions on the original poster's culture?
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New Member
United States
6 Posts |
Different metals have different Densities. You can determine the composition of the coin by its density. Why do you think TPG uses calipers and scales determine if the coin is real? It has to do with the density of the metal. What are you implying about me based on my culture? What are you trying to say? Quote:
Is there a reason why you have resurrected a months-old thread, started by a Chinese member of our forum to discuss Chinese coins which have no relevance to Pandas, for the purpose of putting forth equations which have no relevance to objects which are not uniformly solid while at the same time casting aspersions on the original poster's culture?
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Bedrock of the Community
Australia
21788 Posts |
With
density copper 8.930g/cc**
density silver 10.500 g/cc**
weighted density of .900 silver is 10.343 g/cc.
weighted density of .500 silver is 9.715 g/cc.
for example the diameter of a .900 half dollar is 3.06cm*. mass 12.50 g*
volume = mass / density; 12.50 / 10.343 = 1.209 cc.
AVERAGE thickness of half dollar calculates at 1.6434mm.
My question: where is the thickness of a coin is measured?
? at the rim, ? at the lowest opposing point in the fields? or the average thickness quoted?
* Quoted from KM
** Quoted from a table of statistics for all pure metals.
For information, nickel 8.88 g/cc, manganese 7.39 g/cc.
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Moderator
United States
23522 Posts |
Quote:
What are you implying about me based on my culture? What are you trying to say? I'm not saying your post is without merit. What I'm saying is, you made a poor choice regarding where to place it. This thread had nothing to do with Chinese Pandas, or coin density. As a result, your choice to post it where you did can easily be seen as an affront to the original poster since his topic had nothing to do with yours. Your statement would have been far better as a thread of its' own. And, more specifically, coins are not regular, solid pieces of metal. The thickness dimension varies by field and device; therefore a physical measure of volume based on that dimension can never be accurate. It is why true weight and specific gravity are far more important considerations when authenticating coins. |
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Bedrock of the Community
United States
17884 Posts |
Quote: Why do you think TPG uses calipers and scales determine if the coin is real? Actually they very seldom do. For the most part authenticity is determined by the TPG simply from visual judgment. |
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Pillar of the Community
United States
3184 Posts |
why PCGS? NGC also grades chinese coins too!
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Replies: 32 / Views: 7,511 |
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Posted 07/27/2010 9:06 pm
