A Shakespeare manuscript up for auction gets a lot of attention, but for most collectors, books represent a stable, long-term investment. The word is patience.

One rare stamp, seen as the holy grail of stamps from Great Britain, costs nearly $900,000 — a sizeable investment and one that an increasing number of investors are considering as an alternatives to today’s unstable markets.

If you love edgy bets, the Bitcoin may be for you, but given its newness and volatility, the alternative currency used for Internet transactions has passionate fans and critics.

Superheroes can bring super returns, but only if you choose the right comic book. CNBC's Nicole Lapin reports from New York's ComicCon show.

Stockpiling coins is no longer just for the collector, nowadays even the average investor can find profits in pennies.

With these rare coins, there's two sides to this story but one usually carries more currency that the other.

The collectible stamp market is smaller than most; it's also tougher.

Rare postage stamps with an inverted center—an upside-down central image—are among those fetching the highest prices. Here's a dozen.

The most valuable comic books of all time are usually about a super hero's first adventures.

New York City is not only the place for comi- book conventions, it is also home to many of the most-famous characters and story locations.