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The Ingress Checklist, part of the complete 13-page checklist.
A bloodstained document revealing a life-or-death episode that could have jettisoned the whole US space programme of the 1960s is tipped to sell for an astronomical £80,000.
The complete 13 page checklist was for the very first spacewalk undertaken by man in 1965 and documents a dramatic incident in which the astronauts struggled to close the hatch of their spacecraft afterwards.
It is being sold by Bonhams in New York later this month.