Bob Christy has got this for sale on eBay.
“This is the head from a World War II ford GPW jeep. This will fit a willys jeep flathead motor but is made and stamped for the ford version of the Willys mb jeep. It is an “F” script marked part. The casting number is GPW 6050.
This head has been stored for about 30 years in a building. I cleaned it up a bit, took the plugs out of it. Other than that I know nothing about this head, other than it goes on a gpw. The spark plug holes are nice and clean and the gasket surface looks to be in good shape with no pitting or anything. It does not appear to have any cracks or anything but should be checked thoroughly before being installed on your jeep.”