Original convex porcelain-enamel advertising sign for. With bold Gujarati script on a red ground. Appears along the bottom. A scarce regional tonic/health food enamel, great color and typography. Details. Size: 14 x 10 inches. Material: Porcelain enamel on metal. Brand/Product: Milkotine Tonic. Language: Gujarati. Form: Convex enamel sign. Maker: W. Talwalkar, Bombay (maker mark at base). Era: Early-mid 20th century. Origin: India.