To remove the doubt if the item is real or fake since signatures are commonly forged to trick customers.  This item has been provided with undeniable proof of the items authenticity.  This way your investment is protected for life and will only increase in value.  JSA has provided a Certificate of Authenticity (COA) to show the signature is 100% Real and Authentic.  The Certification Serial Number is NN81709.  The verification link to JSA has been provided below to show you these are undoubtable real and verified on their system.  https://www.spenceloa.com/verify-authenticity