I think this is a 1928 eight radiator shell but it may fit other years. It is 23.25" wide at its widest point near the bottom, 21.5" wide at the shoulder, 30.75" tall at its tallest point, it is 5.75" deep. It has some rust pitting on the surface but none of the pits are deep.
The brass neck and radiator cap are very good. The cap has a hole for a motometer. $400 plus shipping from Colorado