As of now the Porsche certificates of authenticity have stopped. The certificate will be replaced with a ‘Certificate of Production’ due to concerns the former certificate was misleading. The problem is that the COA could only ever verify the vehicle as of its production date, and not what had happened to it thereafter. As the COA is a widely recognised piece of Porsche verification paperwork this change reflects the importance of maintaining an accurate and up to date history file to protect your investment.