I bought this second-hand dressmaker dummy on Ebay at $120. It's Diana brand, made in England, in very good condition except the plastic coating on the pole a bit squashed, but it works fine.
Below pic is the dummy.
However, I don't know if I am missing some part because the body seems to be swingy after I put it on the pole. I took a photo of the joint of the body and the pole.
Can anyone tell if it looks normal?