According to CBC, the Royal Canadian Mint is investigating how a sealed, "pure gold" wafer with proper mint stampings has emerged as a fake. According to the Canadian press, the one-ounce gold piece, which was supposed to be 99.99% pure, was purchased by an Ottawa jeweller on Oct. 18 at a Royal Bank of Canada branch. The problem emerged when tests of the bar showed it may contain no gold at all.
At first, the bank refused to take it back. RBC ultimately thought better of that position, and decided they had an obligation to pick up the bar and then returned it to the mint for testing, refunding Tang the $1,680 purchase price.