9 Most Valuable Collectibles

From 24/7 Wall St.: No longer the sole domain of avid collectors, luxury collectibles are now considered viable alternative investments. Prices of luxury items, such as classic cars, ancient Chinese ceramic art, and rare coins, have reached record amounts in recent years. Such items can be a good way for wealthy investors to diversify their long-term investment portfolios. To track the value of popular luxury items, real estate consultancy firm Knight Frank created the Knight Frank Luxury Invest...