This tailgate is advertised as an original agri-jeep 1944 tailgate. The history of this tailgate is unclear as Fred discusses in this CJ-2 thread: https://www.thecj2apage.com/forums/cj2-tailgate_topic45515.html
https://harrisburg.craigslist.org/pts/d/lititz-1944-willys-jeep-pilot-model-cj2/6983961250.html