The mint sold 97,000 ounces of American Eagle gold coins in November, up 185 percent from October and 62 percent higher from a year ago, after selling out of most of the 2015-dated coins as falling bullion prices attracted buyers.

Demand for American Eagle silver coins has also been strong, with year-to-date sales already reaching an annual record at 44.67 million ounces, breaking the full-year record of 44 million ounces in 2014.