LOST - 6 stations. 6 signs?

Just a couple more Lost pictures. Below are photos which contain different variations of the Dharma symbol. The first one obviously an arrow, the second in the background could be a Raven or a Crow. These start to support a theory that each station has a different symbol each with different meanings.

















There is also a picture circulating which makes it look like a Dharma symbol on the plane. I will try to find it and post it later.