Ford Transfer Case Discovery

I was just looking over the rebuilt transfer case today when I noticed a script "F" and the letters "GPW" (what Ford named their jeep) cast into it. I hadn't seen this before on the transfer case as the Ford markings I had seen on other cases were in a different location (on the rear by the hand-brake drum). I had looked in that area on my transfer case and not found any Ford markings. Here's a photo of the Ford markings which I found on the front left side: