(CNN) – A block of the world’s second official postage stamp is going up for auction in May. It is expected to fetch millions ...

Block of the world's second postage stamp goes up for auction in May; expected to fetch up to $7.5M.

This image of a spiral galaxy, captured by NASA's James Webb Space Telescope, will be on a new United States Postal Service stamp scheduled to be released to the public Jan. 21. Danny Dale, a ...

Muhammad Ali once joked that he should be a postage stamp because “that’s the only way I’ll ever get licked.” Now, the three-time heavyweight champion's quip is becoming reality. Widely regarded as ...

Many collectors today wonder if postage stamps are good investments. While some rare and historical stamps have increased in value over the years, the market can be very unpredictable. Factors like ...

The recent sale of a 1-cent Ben Franklin stamp for $4.4 million, the most expensive U.S. stamp ever sold, again raises for consideration the question, “Are postage stamps good investments?” Certainly ...