If the governor is satisfied from the proof furnished that the applicant is entitled to a pension, he shall issue to the applicant a pension certificate to that effect in a form to be approved by the attorney general and by the department of administration, setting forth the name and address of the pensioner, the date of his discharge, the date upon which payment of the pension shall begin, and such other items as the governor deems proper. The certificate shall be delivered to the pensioner, and the allowance thereunder certified to the department of administration.