The external examination.
First, we must see the paper material, which is made of diploma. Paper stamp, quite pleasant to the touch. To get counterfeiters hard enough, not having the right connections. So they are forced to use ordinary paper.
Number of the diploma.
The first thing to check if there are any in your organization at least 2 of the diploma with the same numbers. If this is the place to be, that the authenticity of both diplomas is questioned.
The most reliable method of verification of the authenticity of the diploma is to contact the Secretariat of the institution which was issued the diploma of education. Any UNIVERSITY or other educational institution maintains a register of issued certificates, their date of protection and the number of the issued certificate. Turning to Secretariat of the educational institution, you can ask defended if the number of the diploma at a specified time.