In reply to Sans, black, combination of different styles, must find!:
From http://tundrablog.com/wp-content/uploads/Picture-52.png, one can conclude that Atipo sans exists (at least) in light, regular and bold
If you download http://issuu.com/corondel/docs/elcorondel_52#download (in Spanish) and have a look you will find in an article concerning their font Calendas (on page 22) the following sentence:
diseñaron la familia Atipo sans para su propio estudio aplicada en logotipo, papelería, web, etcétera.
It thus seems rather clear that Atipo sans is for their own use only.