Baseball’s #1F-30F inserted 1:16 packs and have a "Heavy Metal Fusion" foil stamp on the front. #31F-50F have a "Supernatural Fusion" foil stamp on the front and should be serial numbered to 250, but due to a production error, #39F and #42F have gold backgrounds and are serial numbered to 40 instead, and it is unknown if #41F or #43F exists with a "Supernatural Fusion" stamp. The top trending card in 1999 Molten Metal continues to be the Ken Griffey Jr. #33F Fusion.