Italian to English Bus/Financial Business/Commerce (general)

In a work-related declaration from an employer's HR department. Under the date and city at the start of the letter is written "Amm. Pers. AF/mv". I know that "Amm. Pers." stands for Amministrazione Personale. I've seen the same series of letters with the same capitalization in other documents on the internet, sometimes at the start after the name of the department involved and one time at the end after the space for the signature. Any ideas?