Rare coins are good investment especially those coins that are not circulated like The 1933 Saint-Gaudens Gold Double Eagle which they claimed as the World's Most Valuable Coin. This one according to the news costs $6 million; imagine if you have one of this coin it could make you an instant millionaire.
If you are serious about collecting rare coins or just want to invest on it, you can check out Monaco Rare Coins which is a part of the Monex family of Companies. The Monaco Rare Coin will help you choose from a variety of rare coins, they have experts who can help you select the best investment based from your needs. They have an access to worldwide resources and they are professionals who excel in their field with membership in the numismatic organizations.
Investments should be secured and valuable, Monaco Rare Coins can offer you what you need.