This is a Authentic Signed 8X10 Photo that has been Personally Signed & Autographed by Linda Blair & William Peter Blatty. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by PSA/DNA #AA83521.We offers a 100% Lifetime Guarantee on all Autographed & Signed Linda Blair & William Peter Blatty memorabilia.