This sign advertises Britelite Lamp Oil, a brand from the early 20th century marketed as a high-quality, smoke-free alternative for indoor lighting. The “Britelite” name was used by companies like Harker Mfg. In Cincinnati, which produced various lighting products, including carbide lamps and oil accessories, starting around 1914. During this era, lamp oil was a staple household product, and companies competed on efficiency and cleanliness-hence the slogans “Costs Less” and “Burns Less” featured on the sign. As electric lighting became standard by the 1920s and 30s, many of these specialty oil brands faded from common use. This is likely a porcelain enamel sign. These signs were made by applying layers of powdered glass to a heavy base of rolled iron or steel, then firing it in a kiln. Porcelain is highly resistant to weather and fading, which is why the red and black colors remain so vibrant even with minor rust (“dings”) around the edges. Authentic Originals: Original porcelain signs in good condition generally range from auctions. The “chipping” of the enamel at the edges is a common sign of age for an original. This piece is much more rare due to the Thorne Service Glasgow tag on the back (see photos) Because the label links the sign to a specific historical business in Glasgow, it can actually increase the value for regional collectors with its original Scottish distributor label still intact.