Vintage porcelain signs from the 1940s were commonly used in the United States to advertise various products and provide information, hanging in streets, subways, and other public areas. These signs were crafted through techniques like silkscreening, enamel painting, and using materials like cut letters and tin. Though many original signs have been damaged or removed over time, making intact examples rare to find, there remains a large market for collecting vintage porcelain signs, with prices of authentic signs at auction sometimes reaching tens of thousands of dollars. The colorful, durable signs were an important part of advertising history in America.