WWII pack frame. What’s it worth?

[cmp truck]

Hello,
To answer your immediate question, it is not worth much. There are lots available and as indicated, compared to modern carriers, it is not much fun to carry.
As Chris wrote, I have the frame with the spike which allows the radio operator to stand the WS31 set up for easier use. And as he also said, the paint falls off if you look at it, as when the frames were manufactured, they weren't primed, just finished coated. You can't do that to aluminium as the paint dries and falls off in chunks. The ultimate solution was to anodize aluminium frames making a much stronger if not shinier finish.
Now, if you have a frame, the spike and the brackets for attaching the 10' antenna for the WS31, you may have more value. I have only seen one setup like this, and it is in my basement.
Regards,
Ian Cooper