Inscriptions 10 Decimons And 20 Grammons On Old 8 Reales

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Author	Replies: 6 / Views: 1,395
wonghinghi Pillar of the Community Hong Kong 1270 Posts	Posted 10/17/2012 02:56 am It is common to see the values 10Ds and 20Gs on the old Spanish American colonial 8R. Can anybody know how to calculate the finess of silver by these values. Report this Post to the Staff

Namachieli Pillar of the Community United States 2120 Posts	Posted 10/17/2012 2:18 pm So 12 Deneros is considered 100% fineness, this goes back to a very old method of measuring purity. 24 Granos equals 1 Deneros. So 10D 20G = 10 20/24D -or - 0.9027 Fine. (20/24G) + 10D = 10.833D 10.833D / 12D = .90275 This is how you measure the finess of the coin. More info - http://www.coincommunity.com/forum/...IC_ID=25807& Report this Post to the Staff
Namachieli Pillar of the Community United States 2120 Posts	Posted 10/17/2012 2:19 pm Also, Granos and Gramos are different. Report this Post to the Staff
Peter THOMAS Pillar of the Community Australia 2830 Posts	Posted 10/17/2012 8:46 pm Thankyou Namachieli for the explanation. and isn't that a beautiful coin, as well as a piece of history ! Report this Post to the Staff
wonghinghi Pillar of the Community Hong Kong 1270 Posts	Posted 10/18/2012 06:45 am Thank you so much, Namachieli, I get it now! Report this Post to the Staff
Namachieli Pillar of the Community United States 2120 Posts	Posted 10/19/2012 4:28 pm Glad I can help. This one drove me crazy till I figured it out. I learned how 24 Granos was 100% of a D and thought, hmm same as Carats and gold. Tried D as 24 out of 24. Whoa. that cant be right. Hmm seems like its half what it should be. Tried 12.. Oh that looks right. Cool! Report this Post to the Staff
wonghinghi Pillar of the Community Hong Kong 1270 Posts	Posted 10/20/2012 04:45 am Frankly speaking, not many Hong Kong/China numismatists do not know such common knowledge so I will publicise my knowlegde learned here to my nation's coins' collectors. I think in such olden days, silver coins are used as a medium within and also internationally, a clear assertion to the finess of the coin will help people to trade. When the coinage of old "Cap and Ray", the new Mexican peso also showed the finess of silver but more explicitly, "902.7". Other countries showed the similar figures on their coins, e.g. Argentina 9 Dos Fino (?902 finess) ?Dos=2 Bolivia 9. D. Fino (?902) Peru 9 Dedimos Fino Ecaudor Lei 0.900 Colombia Lei 0.90 Panama Ley 0.900 EL Salvrdor 900 Cam Hondurus 0.900 Guatemala still used old system 10D 20G All above are the past colonies of Spain, this did not happen on their coins for other countries such as Brazil, British Hondurus and etc. So it is very interesting when we like to study more deeply by our old coins. Thank you sharing your experience and knowledge again, Namachieli. Report this Post to the Staff
	Replies: 6 / Views: 1,395

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