The surface of ultra-thin polybutene-1 films was studied using an atomic force microscope (AFM) and resolution of individual molecules was achieved. Polybutene-1 can exist in multiple crystal phases. The tetragonal phase, named form 2, is unstable, converting over time to the most prevalent phase, form I. Comparison of the images with Connolly surfaces enabled identification of which plane of which phase was observed in the AFM images. The samples were prepared in such a way that the bulk would be in the stable phase. It was found that this phase is also stable on the surface.