The product is a set of 8 vintage AC Delco 444XLS spark plugs made in the United States. These spark plugs are new old stock (NOS) and do not come with the original box, showing some light rust. The brand, AC, is a reputable and well-known manufacturer of automotive parts, making this set of spark plugs a valuable addition for collectors or enthusiasts of vintage automobiles. Found in my great grandpa's estate. They were stored in his new car parts section in bag. There is light rust.