Gold 6000 Baht Thailand Coin - Genuine Or Not

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Author	Replies: 9 / Views: 3,583
Angielczyk Valued Member Israel 423 Posts	Posted 07/04/2010 06:32 am I bouht this Gold 6000 Baht Thailand coin some time ago and now there appear to be rust marks forming. Does it mean that it is not gold or is there a safe way to remove them. * Edited by Staff to clarify topic title. Titles are important! * Report this Post to the Staff

Tim Stroud Pillar of the Community United States 2661 Posts	Posted 07/04/2010 07:35 am You should not see any form of "rust" or tarnish on the coin if it is real gold. Report this Post to the Staff
Angielczyk Valued Member Israel 423 Posts	Posted 07/04/2010 08:55 am Thanks. That's what I thought but the coin came from the Thai treasury and Krause says it is .900 gold. Report this Post to the Staff
maudry Pillar of the Community Luxembourg 588 Posts	Posted 07/04/2010 4:36 pm That problem is known for some German 100 euro coins. These ones are .999 gold. I have read about it some years ago. It had created a big polemic in Germany. As far as I remember it is some silver dust that remained on the die. This microscopic silver oxidates with the air and the result is what you can see. It is certainly not a quality but is is no proof the coin isn't gold. Report this Post to the Staff
maudry Pillar of the Community Luxembourg 588 Posts	Posted 07/04/2010 4:49 pm I have found an old topic in a German forum. Yes it is silver and it is a problem that appeared on coins minted in Germany. Do you know where this one has been minted? Report this Post to the Staff
Angielczyk Valued Member Israel 423 Posts	Posted 07/05/2010 09:44 am Thank you Maudry. I do not know where the coin was minted, however if the problem is as you describe is there any cure? Report this Post to the Staff
maudry Pillar of the Community Luxembourg 588 Posts	Posted 07/05/2010 1:16 pm Unfortunately, I did not find any cure to that. The problem appeared mainly on coins minted between 2002 and 2004. It seems the mint has replaced the coins at that time. Report this Post to the Staff
Angielczyk Valued Member Israel 423 Posts	Posted 07/05/2010 2:14 pm Thanks again. My coin is from 1996 so this may not be the problem. Report this Post to the Staff
m9frank Pillar of the Community United States 628 Posts	Posted 07/06/2010 7:28 pm See "copper spot" in our CCF glossary. Report this Post to the Staff
Angielczyk Valued Member Israel 423 Posts	Posted 07/07/2010 08:37 am Thank you mfrank9 this seems to be the problem. Is there any way to remove it? Report this Post to the Staff
	Replies: 9 / Views: 3,583

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