Mint/Composition Mark Question. - Coin Community Forum

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Author	Replies: 7 / Views: 1,602
Matt_G New Member Canada 13 Posts	Posted 12/02/2011 1:41 pm I just received the 25th anniversary loonie from the mint and I noticed a different mark on the obverse. A SP/PA in a box as seen here http://www.mint.ca/store/coin/silve...-prod1210001 Is this to indicate it's silver plated? Or is it something else? Report this Post to the Staff

coinsearcher83 Pillar of the Community United States 1358 Posts	Posted 12/02/2011 4:28 pm I'm guessing it means Silver Plated/Plateur Argente (or whatever in French). Probably they know some people are going to try plating regular loonies, so they were smart enough to prevent that from happening! Good thinking! Report this Post to the Staff
Scissel Pillar of the Community Canada 693 Posts	Posted 12/03/2011 11:03 am The specifications list it as silver-plated bronze-plated steel. This seems like a new plating combination. It would be interesting to see it done with circulation coins - like a $5 coin... Report this Post to the Staff
Ugly Pillar of the Community Canada 1733 Posts	Posted 12/03/2011 4:16 pm Silver plating isn't really very durable at all so it would likely not be a great thing in a circulation item imo. RCM uses an alkaline, cyanide free plating system so they should be able to plate over all their base metal coins if they wish. That plating solution will stick to nickel, other silver (like sterling), gold and gold alloys, rhodium, copper, brass and bronze with proper treatment of the metal to be plated. I've done a few Loonies as test items for my own plating bath of which all three were released into the wild. Report this Post to the Staff
Libertad Pillar of the Community Canada 3692 Posts	Posted 12/03/2011 11:22 pm Ugly, you know that modifying coins and passing them as current is illegal, don't you? - even if you're adding value to them. Report this Post to the Staff
Libertad Pillar of the Community Canada 3692 Posts	Posted 12/03/2011 11:50 pm Wouldn't 2012 be the 26th year of the loonie? They missed it. Report this Post to the Staff
Ugly Pillar of the Community Canada 1733 Posts	Posted 12/04/2011 09:48 am They can arrest me whenever they get around to it. The nice thing about circulating coins for testing plating baths is that their composition is nearly perfectly known. Really makes a difference. Report this Post to the Staff
Libertad Pillar of the Community Canada 3692 Posts	Posted 12/10/2011 4:47 pm Nobody else noticed it's actually the 26th year anniversary and not the 25th, which was last year? A pretty big foul-up. 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 That's 26 years. Edited by Libertad 12/10/2011 4:50 pm Report this Post to the Staff
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