Pirates 4 : Some artwork of 'On Stranger Tides'

Because of the fact that the look and feel of the earlier released pirates 4 postsers really got to me, I went looking for the artistic people who are responsible for their creation. This didn't go as smoothly as I hoped but I managed to find some of the original backgrounds that were used for the backgrounds of these posters.Amazing artpieces on their own if you ask me!

If someone knows who are the artists behind the scenes, please let us know!