PFAS45 This is a rare collectors official limited edition Astronomy autographed Benhams first day cover by Martin Gorst leading award book author on all aspects of Astronomy . He has personally signed the souvenir where the signature rests perfectly accompanying the special hand commemorative frank. You will never get a better autograph lifetime COA than this listing as the signing has been officially certified by the publishers with full hallmarking and authenticity detailed on reverse, together with its individual hand number from the original limited edition series. It is in absolute mint condition.