Proofs are a very early print of a cardback used in the pre-production process for design or layout approvals. They are sought after by collectors because of their small population and because they can give insight into the decisions that were made in the design process all the way to production. Proofs were printed with multiple figures on a large sheet and then individually cut out. In this example we have a Series 8 / 34-Back die cut proof of Python Viper in an elite AFA 90+ grade. Unpunched, great color front and back, and exceedingly rarer than his retail counterpart. Own this piece of G.I. Joe history!  Encapsulated by AFA (90+), #14004085