It's not exactly pennies from heaven, but McDonald's is planning to make it rain coins to celebrate the Big Mac's 50th anniversary.

Starting at the lunch rush on Thursday, customers can receive a MacCoin with the purchase of a Big Mac at 14,000 participating restaurants across the United States, McDonald's announced Sunday.

And what's the coin good for? Another Big Mac.

Customers can redeem the new currency for a free Big Mac starting Friday and running throughout the rest of 2018.

In an Interview with USA TODAY, McDonald's CEO Steve Easterbrook explained Thursday was selected as the release date for the brass-colored coins because it would've been the 100th birthday of Jim Delligatti, a McDonald's franchisee in western Pennsylvania who invented the Big Mac.
在周四接受《今日美国》的采访时,麦当劳首席执行官Steve Easterbrook解释说,之所以发行这个古铜色硬币,是为了纪念麦当劳的在宾州西部连锁商Jim Delligatti诞辰100周年,就是他发明了巨无霸。

The coin idea sprung from the role that the Big Mac has played in measuring purchasing power.

The Big Mac has become an American icon over its 50-year run. In 2007, the Big Mac Museum Restaurant was established in North Huntingdon, Pennsylvania, to honor the juicy burger. Its Big Mac sculpture is 14 feet tall and 12 feet in diameter.

And in 2016, McDonald's division in the United Kingdom auctioned off a 740-milliliter bottle of sauce used in the burger for roughly $95,000 on eBay.

McDonald's sold 1.3 billion Big Macs last year, according to the chain.