Got a closer look at it this evening. It's not beat up much but the sockets for the top bows are rusted out. Floor isn't perfectly flat but not too bad and not rusted out. I'm guessing it's a fairly early model as the tail light lens is different than I've seen and the tarp hooks are cast or forged instead of stamped. I'm not very familiar with what was used on the 1 1/2 ton. Tail gate and tool box door look almost perfect....wish it was a CCKW, I need both.
Trailer frame is just a home built channel iron welded to the bottom of the box. Doesn't look like they chopped any of the box mating it to the frame, which is good.
I think it can be bought for $150 as he was thinking of piling it full of iron and taking the whole thing to the scrapper.
If I use the tool box door and trailer socket for my CCKW, and if I can't find a buyer for the box, I could probably sell the tailgate fairly easily. (after using as a pattern to build one for the 2 1/2 ton.)