Seller has other CJ-6 parts for sale, too.

https://galveston.craigslist.org/pts/d/houston-1957-cj6-willys-jeep-koenig/6870684126.html

“Early CJ6 Willys Jeep Koenig Ironworks Hardtop. The doors and outer roof skin have been media blasted. I have all of the hardware for the door sliding windows and sliding windows for the side panels. The rear hatch is missing, I never had it and dont know where it is. Seeing that it would basically be a flat piece of sheet metal with a top hinge it would probably be pretty easy to make one. The top is in reasonable condition, and I believe would only need some minor repair, new glass, and a rear hatch door to be 100%. I am asking $250 obo.”