This contribution describes some aspects of the work with a four-year-old autistic child who was treated for many years with four times weekly sessions of psychotherapy. The fluctuations between the symbolic and non-symbolic use of external objects are described, as well as the ever changing quality of the child's object relations. The rhythmical element in the analysand-analyst interplay is of great importance: the construction of the temporal shapes (Alvarez) and the modulation of presence and absence are relevant as regards the progressive capacity to name aspects of external reality and subjective experience. From a theoretical point of view, the contributions of both the post-Jungian, including Michael Fordham, and the post-Kleinian traditions are outlined. The notions of pre-conception (Bion) and of archetype (Jung) are immensely helpful in working with autistic children as they actually help the analyst in assuming that some proto-trace of representational potential is always present in the individual.