Our company has a validation system. If you enter the COA number can be validated. FINAL CARDIFF 2017 Official Ball. Hologram & Secure Number & Barcoded. The item “2017 UEFA CL FINALE Messi + Ronaldo Signed Official Ball + Official COA RARE” is in sale since Tuesday, February 06, 2018. This item is in the category “Sporting Goods\Team Sports\Soccer\Clothing, Shoes & Accessories\Clothing\Men”. The seller is “chultaki_0″ and is located in yongin-si. This item can be shipped worldwide.