This product is a unique bundle of prints and first day covers, all signed by WWII pilots. The signatures are authenticated through private signings, making them highly valuable collectables for aviation enthusiast. The certification adds an extra layer of authenticity to these rare pieces, which would be a prized addition to any military memorabilia collection. Signatures include Eric Brown, Alan Deere, Gerald Stapleton, Peter Brothers, Leonard Cheshire VC, Bob Foster, Nigeria Rose Ken Wilkinson, Terry Clarke and more. These are real signatures and not copies.