18" x 18". Made of porcelain enameled steel. Most likely from the 1980s. Has a few scratches on it but for 40+ years old I would consider it in very good condition. Great for the garage or basement...or someone who has an old phone booth in their house. Good price! The product is a vintage Illinois Bell porcelain telephone sign from the 1980s, featuring a double-sided design in blue and white colors. This collectible advertising piece represents communication and utility themes, making it a unique and nostalgic piece for collectors interested in vintage telecommunication memorabilia. The original nature of the sign adds to its authenticity and appeal as a classic piece of retro advertising.