If it existed when he needed a "birth certificate". AFAIK, Hawaii did not start issuing CoLBs until 2001, before that they would issue a certified copy of the "long form", either printed from the microfilm/microfiche of the oringal or a photocopy of the original. Like this:
This an image of certified photocopy of a 1963 Certificate made in 1998.
This is an image of a certified microfilm/fiche print of an August 1961 Certificate made in 1966.
The latter is from a birth the day after Barry is supposed to have been born. Interestingly it's file number is lower than that of Barry's CoLB image. It was also filed 3 days *after* the Obama CoLB indicates it was filed. Yet it has a lower number.
Also interestingly, when researching some "certifigate stuff". I found this little tidbit on the Vital Statistics Page of the Honolulu Star Bulletin, one of the two papers that the "birth announcement" was supposedly found:
Each Sunday, the Star-Bulletin publishes Oahu vital statistics for marriage licenses and birth certificates filed with the state Department of Health's Vital Statistics System.
The statistics cover the five-business-day period ending the Thursday of the previous week.
The dates listed do not necessarily reflect the actual marriage or birth date, just when the information was filed If that last little tidbit was true in '61, then there is a disagreement between the COLB and the "birth announcment(s)". The COLB says it's corresponding certificate was filed on August 8th, not the 4th which is the date shown on the COLB as the date of birth. Just something that makes me go "hmmmm".