I wont pretend to know much about this item, even after researching this piece I am still lost. Here is my best guess though, its either a crock or sugar jar. The pattern looks like the shape of a heart with possibly the Blue Pennsylvania pattern below it, but as I said before I am unable to find the exact pattern or shape in any of the 400+ current completed ebay listings. In my opinion it shows a lot of age and has a very dark tone (why I think its salt glazed) so it could even be an earlier piece since I am unable to compare it to anything on their current website. Oh yea it stands about 7" tall.
Any additional information would be super.. Thanks All.
Picture file is too big so I'm going with this sorry.