William H. Gross was a famous stamp collector, and this 2 cents Hawaiian Missionary stamp was the most valuable stamp in his collection. The stamp, dating back to 1851, went for $619,500 at a ...

The auction will mark the first time the rare stamp is up for sale ... are used and have cancellation marks. “Most of [the Z-grill stamps] were 2-cent and 12-cent stamps. Some were 3-cent ...

"For far too long the United States has minted pennies which literally cost us more than 2 cents. This is so wasteful ... pennies could result in the most valuable coins—whose price is dictated ...