From a 26-pound Mughal masterpiece that vanished after a failed auction to a one-ton Australian record-holder worth nine figures in metal alone, the world's biggest gold coins carry histories as heavy ...

The 1886-B Swiss 5 francs is exceptionally rare. Numismatica Genevensis noted only five were struck, with two currently in private ownership. Look for such identifiers as the 1886 date and the "B" ...

If you're aiming to add some variety to your investment portfolio, don't overlook gold. It's often seen as a safe-haven asset: In times of economic or political turmoil, investors turn to gold because ...