1876 Potosi 8 Reales - Coin Community Forum

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Author	Replies: 5 / Views: 1,224
Arkie Pillar of the Community United States 2637 Posts	Posted 05/19/2015 11:35 pm 26.96 grams, 39.2 mm. Open section acid tested as mostly silver, but not 90 percent according to LCS. What is this coin? Report this Post to the Staff

wonghinghi Pillar of the Community Hong Kong 1270 Posts	Posted 05/20/2015 04:35 am Quote: 26.96 grams, 39.2 mm. Open section acid tested as mostly silver, but not 90 percent according to LCS. What is this coin? Then what is the exact value you got? If it is 85-90%, it is still acceptable. The analytical error must be taken into account. Report this Post to the Staff
Arkie Pillar of the Community United States 2637 Posts	Posted 05/20/2015 07:34 am Acid is not so precise. He stated that it was not as bright as 90 percent, but clearly silver. Report this Post to the Staff
Lucky Cuss Pillar of the Community United States 4883 Posts	Posted 05/20/2015 08:20 am I'd never let acid anywhere near a coin like this. Stay with nondestructive and more accurate tests such as specific gravity, which is easily done without anything more special than a scale measuring to 1/100 of a gram, or x-ray fluorescence if you have access to such. That said, your specimen seems fine to me, solid XF/AU but for the flan flaws (which give it character). Colligo ergo sum Report this Post to the Staff
colonialjohn Pillar of the Community United States 1757 Posts	Posted 05/20/2015 09:17 am We may? think Sheffield but it could be a lamination error. It has good weight. JPL Report this Post to the Staff
swamperbob Pillar of the Community United States 5362 Posts	Posted 05/20/2015 1:30 pm Density testing will determine if the coin is good silver or not. In 1835 density testing was introduced to the Chinese by the British to detect coins that were more than 6%-10% debased. Scales that the time were 1/100 accuracy. Report this Post to the Staff
	Replies: 5 / Views: 1,224

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