Higher education minister Michael Kaingu has circulated what he calls confirmation of his possession of a grade 12 certificate.

Kaingu is circulating a letter purported to have been issued by the Examination Council of Zambia.
The letter alleges that Kaingu has a grade 12 certificate obtained in 1972. The truth is that in Zambia there was no grade 12 qualification in 1972. Pupils used to be awarded form 5 qualifications.
Kaingu did not circulate the actual grade 12 certificate but instead is using an unstamped letter purported to be from ECZ.

If he had a form 5 certificate and has taken it for verification, the confirmation letter Should state that he has a form 5 certificate. Form 5 and grade might be equivalent but they are not the same thing.
We just hope someone won’t end up being arrested for these forgeries when the time of visitation comes.