Some spare change can prove incredibly valuable. Check your pockets for some of these rare and valuable coins.

Coin experts say people may want to hold on to some pennies, though they likely won't be valuable any time soon.

Here are 10 rare coins, including five still in circulation, that are certain to increase in value in the next five years.

Despite Ripple-developed XRP being one of the hottest digital assets -- up nearly 740% in three years -- it lacks the true ...