Neil Armstrong Original Authentic Signed Autograph Cut

Acquired it from my grandfather, a big Neil Armstrong fan. He told me he got him to personally sign it for him. Legit. Not a printed autograph. Original. It had a COA from a company (not sure which) but paperwork was lost. Sticker is still on the back of the cut from the COA. This item is still very white and was kept in a room enclosed to prevent aging of the paper.