The article presents the problem of occurrence of pottery of foreign provenience at the turn of the Early and Middle Bronze Ages in Slovakia from the point of view of a complex process that led to formation of a new quality - the so-called Tumulus cultures and oldest Urnfield cultures (the Suciu de Sus and Piliny cultures). This transformation process was reflected in lively trade and cultural contacts of the north Carpathian region with cultures of almost the whole Carpathian basin and probably also in movements or shifts of smaller ethnic groups from the south northward and from the east westward, what is evidenced by presence of foreign cultural elements or imports in collections of finds belonging to particular cultures. They are mostly finds of pottery from the north Balkan region of the Vatin-Vrsac-Girla Mare-Cirna cultural circle and from the area of Otomani culture spread at the north-eastern part of the Carpathian basin. Older finds of this kind were recently enriched with pottery of foreign provenience from further sites. Pottery from the both newly excavated sites reflects distinguishable heritage of the Otomani and Vatya cultures. Origin of decoration motifs of the so-called 'Litzen' decoration have to be sought in the north Balkan milieu of the Belegis I or Cruceni- Belegis cultures. As far as their chronology and cultural environment are concerned, these finds are connected with those from the necropolis in Dolny Peter from the sites in Muzla-Cenkov and Sutto and from the necropolis in Menfocsanak and they approximately coincide with younger phase of the Kosziderian horizon bronze hoards. The work also presents a problem in terminology, which is connected with appellation of the time horizon with occurrence of these finds in the south-western Slovak region by various researchers, such as the Old Tumulus stage of the Carpathian Tumulus culture; the Dolny Peter phase of the Madarovce culture; late or post-classic stage of the Madarovce culture. At the same time the time interval is proposed to be named the Madarovce culture - Tumulus culture horizon also in connection with its provable continuity of the local development in following stages of the Middle Bronze Age. Hence, this would be a time period that can be synchronized with the horizon of finds of the Rakospalota group of the Vatya culture, the Streda nad Bodrogom group of the Fuzesabony culture or with the transitional Otomani culture - Piliny culture horizon.