Occasional sharp price swings during early and late November also boosted bullion coin buying by investors and speculators alike, coin dealers said.
"There is a huge influx of new high-net-worth individuals that are buying a lot of gold, and they are taking physical possession of it," said David Beahm, vice president of Blanchard & Co, one of the largest US retail coin and bullion dealers.
Investors have so far this month bought 131,000 ounces of American Eagles produced by the US Mint, more than tripled last year's November sales and marked the strongest November since 1998, data from the Mint's website shows.
November marked the second consecutive monthly rise after a dismal performance earlier this year. In October, the Mint sold 59,000 ounces versus 50,000 ounce in the same period last year.
Dealers also reported coin blanks buying by the US Mint as it was set to mint the 2013 American Eagle coins.
The Mint typically shuts its 2012 coin production in early December so it can start minting next year's which are usually highly sought after by coin dealers and collectors.
American Eagle silver coin sales in November rose to 3.135 million ounces, more than double last year's sales at 1.384 million. It was, however, slightly below October's at 3.153 million ounces. Political uncertainty due to a heated US presidential race and $600 billion automatic cuts in government spending and tax increases early next year have boosted gold investment, analysts said.
Even though a recession resulting from the so-called fiscal cliff could severely undermine gold's inflation-hedge appeal, it is also likely to trigger a flight to quality investment such as gold amid economic uncertainty, trader said.