Sir Edmund Hillary & Tenzing Norgay Signed 25th Anniversary FDC Envelope BAS

This Autographed w/ Commemorative Coin & Original Presentation Folder Postmarked May 29, 1978 25th Anniversary First Day Cover Envelope has been Personally Signed by Sir Edmund Hillary & Tenzing Norgay. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website.