Zeiss Ikon Contaflex

This camera, probably my favorite, once belonged to my great grandfather. It has traveled throughout europe, and later was used by my dad in his high school photography classes. This camera has a built-in light meter (The window on the left side of the lens) that still works. It also has a polarizing filter that does some wierd stuff with reflections on shiny things. Unfortunately, I do not know if it works, as I have developed a roll of film I have taken with this camera, however they all came out completely overexposed. The camera was built circa early 1950s.