"When I saw the photographs and she explained the full story, I knew that it could be of great historical interest and importance, " Sam Tuke of Bonhams in Exeter is quoted as saying.
Abta spokeswoman Frances Tuke said if tourists did not wish to go to Sharm al-Sheikh, then Abta will cancel members' holidays for them free of charge, or take them on a different holiday or give them a refund.