The CAC Christensen Agate Company Striped Opaque marbles are a unique collectible item that showcase the craftsmanship of Christensen Agate in the pre-1970 era. Made in the United States, these marbles feature a striking striped opaque design that adds a touch of nostalgia to any toy or hobby collection. With a diameter of .54 inches, these machine-made marbles are a rare find for enthusiasts of vintage marbles.