Here is a picture taken in July of 2009 of Pope John XXIII’s well preserved body. He died in June of 1963 (JFK, November of 1963, thus the picture referenced in the book).
The church has chalked this up to his original tomb being airtight rather than divine intervention. He is being considered for sainthood at this time (but he was quite controversial). Nevertheless, the Vatican has decided to keep him on display. His facial expression is unchanged from the time he died.
