Sixty years ago, the first Shakey’s Pizza Parlor opened in a former grocery store in Sacramento.

Monday (July 7), the pizzeria is celebrating its 60th anniversary by giving away free giant slices of pizza from 3 to 5 p.m. at participating Southern California locations. No purchase is necessary.

Participating Inland Empire locations include Rancho Cucamonga, Redlands, Upland, Chino, Fontana, Montclair, Moreno Valley, Palm Springs, Riverside and Temecula.

You can either print the above coupon or display it on your mobile device.

For more information, click here.