Wow all this help!.. from the top:
@loopie_beer : Yes the posts are screwed on, not welded. I followed the Amazon link, but it shows as unavailable, I seached around and found this
But the reviews are crappy.
@brew_cat: They are both screwed on, one is just missing
@brew_cat: I was buying some kegs on CL and the guy gave me this for free.
@hd4mark: Nope 5 Gallon, but I did see on-line where this design is used for smaller and larger kegs
@sneezles61 : Posts are screwed in, they come in two parts.. see pic
But with the two posts on Amazon @$23, plus I would need a gas a liquid dip tube, it looks like this will cost $35 to repair, which is maybe the max I could sell this for. So perhaps this is just a give-away for someone who wants to spend the money to restore it or to put in a bung and use it as a tank.