Now THAT is a very interesting comment. Back in those days, people called a spade a spade and that sort of information was commonly included in public documents. A modern, computer-generated birth certificate may be perfectly legitimate, but the format of the output would likely NOT include such information. We now live in a PC world.
If that's the case, I can certainly see why Obama would rather release this version of his certificate rather than something closer to the original.
Some states also had the word bas*ard on them if parents were not married- I have seen that on old BCs, where it asked for father’s name- don’t know when they quit doing that. Maybe long before 1961- but I don’t know- I saw it on certificates from the 1940s.