THE index is alphabetical. The index you see is for FIVE YEARS.
1960. 1961. 1962. 1963. 1964.
When printed out, if there were two births in those five years for JOHN SMITH then the names would appear one underneath the other.
I get it....I believe. but... lemme think.
I assume the people creating the fake identity probably had people in the DoH at that time helping them? Or was the DoH only complicit more recently?