1970 VADM WM Mack Office Secretary Defense Identification Badge Authorization

Description

I've been asked to sell items from the estate of Vice Admiral William Paden Mack, former superintendent of the Naval Academy.
Offered here is a authorization certificate.
For Service within the Office of the Secretary of Defense
Vice Admiral William P Mack USN
Is authorized to wear the Office of the Secretary of Defense Identification badge.
Dated January 28, 1970
Signed Roger Kelley by direction of the Secretary of Defense
10 by 12 "
Embossed Department if Defense Seal
Small spot noted.