McDonald's is introducing a new form of currency to celebrate the Big Mac's 50th birthday.
Starting Thursday, customers who order the iconic burger will receive a brass-colored MacCoin which can be redeemed for a free Big Mac until the end of the year. The offer is good at locations in more than 50 countries.
Thursday was chosen as the start of the promotion because it would have been the 100th birthday of Jim Delligatti, the McDonald’s franchisee in Pennsylvania who was credited with inventing the Big Mac. Delligatti passed away two years ago.
The MacCoins will come in five different designs, one for each of the past five decades.