The 7 slot grille happened because of Ford.Great pics tluke and thank you! What an education. I was under the impression that Jeep always had 7 slot grills but saw 9 and 8 slot grills. I loved the crate shots too. One last interesting thing. Ironically one was advertised for 50 dollars and today........50 thousand bucks.
The army owned the plans for the Jeep, and Willys couldn't build them fast enough, so they had Ford build them too.
In order to make their built Jeeps distinctive, Ford used a seven(7) slot grille.