This is just weird. Pretty elaborate set up if this is a fake, and even Kodak experts couldn’t figure this up… here is an excerpt:
Some days later Mr Templeton got his photographs processed by the chemist, who said that it was a pity that the man who had walked past had spoilt the best shot of Elizabeth holding a bunch of flowers. Jim was puzzled. There had been nobody else on the marshes nearby at the time.
Read the rest here: The Solway Firth Photo, 1964 (Spaceman)