STB011  This is a rare collectors official limited edition Battle Of Britain first day cover personally autographed by historic pilot CK Hilken from the war who was in 74 Squadron. 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.