Difficult it is to recognize a U.S. stamp these days. No sooner does one get used to the Statue of Liberty on a blue stamp than Abe Lincoln shows up on a purple one. Then, expecting Abe's face when ...

If you've ever come across an old stamp collection and wondered if it might be worth something, you're not alone. Collecting vintage stamps isn't just a charming pastime-it can also uncover hidden ...