Just wanted to say that it was not necessary to block out the last part on the birth certificate where it says A true copy of records kept at XXXXX. It's easy enough to find out where the records are. They can be found at Makombe building in Harare somewhere in the archives. Three copies of a birth certificate are made. One is kept at the local registry office, the other is stored at Mokombe Harare and the third is issued to the holder. If your story is true you can easily bribe someone at Makombe building to show you a the base copy.
In this case it even seems there are two copies to be found in Harare because there is a stamp that says Causeway Building which means the birth was most likely registered in Harare during the hyperinflation period hence the odd $200 dollar fee instead of the stamps that were used in the very old days. The birth also does not have a red streak line which means although it is typed instead of hand written it is not computerized.
It is even possible there is an even earlier copy of the record BDH/1421/72 means the original birth was recorded way back in the Original Rhodesian days somewhere in Bulayo (BDH).