A vintage trademark for Piggly Wiggly "self service" stores. At the company's zenith in 1932, there were two thousand six hundred and sixty. However, hostile takeovers resulted in several locations being divested. Today, Piggly Wiggly is headquartered in Keene, New Hampshire and oversees the operation of six hundred franchised stores in seventeen states.
Graphic from http://www.pigglywiggly.com