Germany has recently released 1 million gold one mark coins to commemorate the retirement of the mark currency. This used 12 tonnes of gold. Apparently the whole issue sold out within an hour. We are currently trying to get more details, and will publish them here when we get further news.
Specifications
Diameter 23.5 mms.
Weight 11.85 grams
Alloy .999 Gold
Issue Limit 100,000