This vintage Vitro Agate marble boasts a stunning black line running through a bright red swirl pattern. Measuring .61 inches in diameter, this machine made marble was crafted pre-1970 and is perfect for collectors or anyone who appreciates the artistry of marbles. The brand is highly regarded in the industry, and this particular style is a standout example of their work. Whether you're a seasoned collector or just starting out, this marble is a must-have for any collection.