Basically, we need another Certified Copy of a BC requested in 1964. This is not easy. Why do people request certified copies? For some odd purposes. Do they then keep them? That’s a big question. I agree with someone who said up the thread that the documend WND got is like apples to oranges.
Because they have to provide them for various reasons from time to time. I doubt that anyone besides the jurisdiction where you were born has an ORIGINAL birth certificate. They are all copies and they are certified to assure the person checking that they are accurate.