It’s Fun to Know: About $1 Coins

Why is the government so eager to issue $1 coins… despite the indifference of the general public? Well, the average $1 bill circulates for 21 months and then must be replaced, while a coin can last 30 years or more. And although the $1 coin costs three times more to produce, government accountants contend that switching away from $1 bills completely could save the government $50 million a year.

(Source: Wired )