Defiance Spark Plugs Double-Sided Flanged Sign rollodor grounding it firmly in mid-century

grounding it firmly in mid-century American shop and office furniture

This example remains structurally sound

43" W x 20

White Company was founded by Orlando C

Defiance Spark Plugs Double-Sided Flanged Sign rollodor grounding it firmly in mid-centuryc. 1930s 1940s; Defiance Spark Plugs, Inc. Toledo, OH Double sided flanged tin advertising sign for Defiance Spark Plugs, featuring the bold slogan "Predetermined Quality" above the company's signature plug illustration. The sign's deep orange background, contrasted with black and cream lettering, embodies classic prewar industrial design and early automotive branding. The flanged edge allowed for perpendicular mounting outside service stations and