Diamond DOL-1 HS High School Baseball. Three (3) dozen baseballs. Leather baseball with cork and rubber pill Premium leather and Raised Seam Approved by the NFHS National Federation of State High School Associations Approved Ball - NOCSAE Stamp. Recommended for Game or Practice Special UPC/GTIN Number Diamond Sports for Rods Sports Diamond DOL-1 HS High School Baseball. Three (3) dozen baseballs. Leather baseball with cork and rubber pill, elect wool blend winding, premium leather cover and Diamond Seam. Approved by the NFHS (National Federation of State High School Associations). NOCSAE Stamp. Recommended for Youth and Adult Game or Practice.