The Massey Harris VTG Advertising Pocket Screwdriver in the shape of a cow, promoting Thibenzole Cattle Wormer, is a unique and original collectible piece from United States agriculture history. This tool serves as a functional yet decorative item, showcasing the brand’s commitment to promoting their products through creative advertising methods. Perfect for collectors of vintage agricultural memorabilia, this screwdriver is a charming and nostalgic addition to any collection.