An authentic vintage Japanese double-sided porcelain enamel advertising sign for Marukin Soy Sauce (マルキン醤油), one of Japan’s most iconic soy sauce brands. The sign features the classic Marukin circular logo in bold white against a vivid red background, accompanied by the large 「マルキン」 lettering at the top and 「醤油」 (Soy Sauce) at the bottom. Its minimalist graphic design and strong color contrast are hallmarks of mid-century Japanese commercial advertising. Both sides retain their original porcelain enamel finish. One side is exceptionally well preserved with bright gloss and vibrant color, while the opposite side shows minor enamel loss near the lower edge along with light scratches and age-related wear. Overall, the sign presents beautifully and has excellent display appeal. An outstanding collectible for enthusiasts of Japanese enamel signs, food and beverage advertising, industrial décor, or Showa-era memorabilia. Estimated date: c.1950s–1960s Material: Porcelain enamel on steel Dimensions: * Width: approx. 36 cm * Height: approx. 45 cm Condition: Original vintage condition. One side is in particularly clean condition with excellent gloss. The reverse shows minor enamel chips, scratches, and light wear consistent with age. Please examine all photographs carefully, as they form part of the description. Keywords Marukin, SoySauce, Shoyu, Enamel, Sign, Japan, Showa, Vintage, Advertising, Porcelain, Steel, DoubleSided, Grocery, Food, Collectible, Industrial, Retro, Memorabilia, Antique, Dealer