Our company has a validation system. If you enter the COA number can be validated. Hologram & Secure Number & Barcoded. The item “2016 UEFA CL Messi + Ronaldo Signed Official Ball + Official COA, LTD 5/10″ is in sale since Monday, July 18, 2016. This item is in the category “Sporting Goods\Team Sports\Soccer\Clothing, Shoes & Accessories\Clothing\Men”. The seller is “taewoocho0″ and is located in seoul, seoul. This item can be shipped worldwide.