This product is an 8-piece lot of vintage seafoam icy white slag marbles, measuring 19mm in diameter. These marbles are machine-made by JABO, a well-known brand in the United States. They are from the pre-1970 time period and have a swirl style. These uranium marbles are perfect for collectors or enthusiasts looking to add rare and unique pieces to their collection. Perfect for shooters or display, these marbles are sure to bring a touch of nostalgia and charm to any collection.