[TChad]

What is the “Given under My Hand and Seal of Office this 17th day of February, 1964”? Is that when this document was created from the original record?

[perchprism]

Someone apparently obtained a copy, in 1964. This is a COPY of the original.

[Red Steel]

What is the “Given under My Hand and Seal of Office this 17th day of February, 1964”? Is that when this document was created from the original record?

Yes, that's what it looks like.