You Have Just Landed on MOONGRAPHS Your Journey into Investment Grade Autographs is Ready for Liftoff! Edward Witten PSA/DNA Autographed Signed Business Card Mathematical Physicist. Autographs Featured on MOONGRAPHS are Certified 100% Authentic by P S A/DNA Authentication Services. P S A/DNA is the world's leading third-party Authentication service for autographs and memorabilia. P S A/DNA uses state-of-the-art, proprietary advanced technology to provide security and protection utilizing their four-level Authentication process.This Autograph is Protected by Encapsulation. P S A/DNA has Authenticated and evaluated this autograph, and to reinforce it's Guarantee of Authenticity it has been Encapsulated in P S A/DNA's sonically sealed, tamper-evident holder, safe, secure and ready to display. Explanation of costs for those. Customers who may be unfamiliar with PSA/DNA. Has up to a 4-month backlog for autograph authentication and encapsulation. In addition, you must fill out detailed documents with each autograph submission. This ensures your investment remains fresh and mint!