Color printed invitation, 4 x 6.25, to a luncheon to launch the Thermalite Lift-Off Campaign, held at The Savoy in London on February 15, 1985, featuring Armstrong as the guest of honor. Signed in the upper left corner in blue felt tip by Armstrong. In fine condition, with recipient’s name printed in blue ballpoint on the invitation line and a perforated right edge. Accompanied by a two-page press release for the Thermalite sales promotion, in which Armstrong presented three prizes of trips to view a shuttle launch, as well as Thermalite’s biography of Armstrong. Pre-certified Steve Zarelli and RR Auction COA.