Marathon Products Advertising Sign (not authenticated)

This is a circular porcelain or painted metal advertising sign featuring prominent branding for Marathon Products. The sign has a distinctive color palette consisting of a dark central background with a white graphic of a classical running figure, surrounded by a wide green outer border outlined in thin orange stripes. The text visible across the top arc reads 'MARATHON' in bold, white, block-style capital letters with orange drop shadows, while the bottom arc reads 'PRODUCTS' in a matching style. Centered near the bottom of the black field is a white banner containing the legible text 'BEST IN THE LONG RUN' alongside smaller text reading 'REG. U.S. PAT. OFF'. The piece exhibits condition issues consistent with age and outdoor exposure, including surface grime, oxidation, and rust around the mounting screw holes located at the perimeter, as well as minor chipping along the edges. The attribution relies directly on the clearly visible text and iconography printed on the face of the sign, though the item remains unauthenticated in terms of its exact manufacturing era or original context.

Based on what I can see in the photograph, this circular sign presents prominent branding and typography associated with Marathon Products, featuring the classic running figure graphic and the slogan 'BEST IN THE LONG RUN'. I can evaluate the visual design and condition from the image, but I cannot verify the manufacturing materials, exact age, or fabrication techniques from a photo alone. The piece shows visible surface grime, oxidation, and rust around the perimeter mounting holes, along with minor edge chipping, all of which suggest significant age and outdoor exposure. Vintage petroleum and automotive advertising signs of this type generally attract steady collector interest in the current market, with values heavily dependent on condition, visual appeal, and market demand. However, because this item remains unauthenticated and visible markings can be replicated, this valuation assumes the attribution is correct. An in-person physical examination by a qualified expert, alongside provenance research and a detailed inspection of the finish and metal or porcelain composition, would be needed to confirm authenticity. If physical inspection were to reveal that this piece is a modern reproduction, replica, or decorative copy rather than a period-authentic sign, the value would decrease substantially, typically falling into the $50 to $150 range.