Early47, sorry we have gotten off topic (Sometimes we get carried away

) Like Tim says and by looking at your pictures, it's a 1/2 ton. You only have one stake pocket in front of the fender. If you had two, it would be a 3/4 ton or in some case, a long bed 1/2 ton.
We have a great section
making a stovebolt bed where we can get into further conversations and the moderator won't kick us out

.
My guess is that your bed is in good condition with little to no rust , straight fenders and the optional spare tire carrier (hard to find), i would say $250 -$500.