Nice soda. They come in smooth base and iron pontil versions. They are the most common pontiled RI colored soda, but are probably worth a minimum of $50. The smooth based ones vary a lot depending on condition.
Hmm, they are hard to tell when there is no iron left. Plus I've seen a few of these with crude bottoms. I'd tentatively say smooth base since the crudeness goes right to the edge of the base from what I can see.