For silver buggers....think you will find this a good read. Found it interesting that silver content in coins was removed in US after 1964 and in Canada after 1967.....looking for those old coins. I have an old slot machine I think i will have to crack into and see what's all in there!

http://www.bullionbullscanada.com/index.php?option=com_content&view=article&id=12786:fifty-years-of-suppressing-silver&catid=49:silver-commentary&Itemid=130