The product is a lot of vintage zinc cap lids designed specifically for Mason canning jars, manufactured by the Ball brand. These silver-gray lids are original, not modified, and are made in the United States. They are the perfect addition to any collector's inventory of modern or vintage jars, adding a touch of nostalgia to their collection. 5 Ball lids, 1 Atlas, and 2 unknown Numbers on them are 25, 30, 3, & 2
eBay