This was a Fictitious Business logo and letterhead created as a cover for an old Detective Case up in Marina Del Rey and Santa Monica back around 1986-ish. I even ran this as an ad in the LA Times Classifieds and the Yellow Pages. We (As in my boss and I at Phalanx Investigations) had a very elaborate sign carved down in Laguna Beach. I was still in the Marine Corps at the time, homebased out of MCAS El Toro.