In 1961 people were still free to tell the records nurse anything they wished regarding race. Besides, this was Hawaii and the use of "black" would be meaningless.
We didn't standardize around the "black, non-Hispanic white, other, etc." business until the 70s in fact. That's also when the law changed to require someone other than the respondent fill out the "race" part.
That's another reason that I didn't buy the whole official looking faked birth certificate. I seriously doubt that Hawaii was more sophisticated than Massachusetts in granting birth certificates.
I suspect Obama's birth was recorded by hand in a log of births. Certificates were most likely hand written.
Sis was born in December 1962, Boston. Her birth certificate is hand written and only acknowledges our parents by name.