CERTIFICATE OF AUTHENTICITY: JDJS SPORTS. The item "Notre Dame Multi (6) Signed Mini Helmet (COA)" is in sale since Friday, March 13, 2020. This item is in the category "Sports Mem, Cards & Fan Shop\Autographs-Original\College-NCAA\Football\Helmets". The seller is "**6xsb" and is located in Largo, Florida. This item can be shipped to United States.