The well-known Late Upper Palaeolithic cave site of Maszycka (southern Poland), excavated in the end of the nineteenth century as well as in the 1960s, furnished a collection of 89 osseous artefacts manufactured from cervid antler, mammoth ivory, and mammal long bone. The great majority are finished tools, mostly projectile points, while raw material blocks, pre-forms, and production waste are represented by only a few pieces. Based on the presence of the characteristic double-split antler tools, distinct projectile morphologies, and recurring ornaments, the assemblage from Maszycka can be assigned to the early Middle Magdalenian facies à navettes which dates to around 19 - 17.5 ka cal. BP. Compared to the western European sites, which also belong to this facies, Maszycka is characterised by a high proportion of ivory tools, reflecting the abundance of this favourable raw material in eastern central Europe, as well as an unusually high proportion of decorated tools, which may relate to an increased need for symbolic communication within the small and geographically isolated Magdalenian group. Both the remarkable typo-technological similarities of the bone industry from Maszycka to contemporary assemblages in France and the gap in the central European archaeological record between 22 and 19 ka cal. BP speak in favour of a direct immigration of Magdalenian hunter-gatherers from western Europe immediately after the end of the Last Glacial Maximum. Their relations to the bearers of the Epigravettian adjacent to the east and south remain to date poorly understood.