Recent excavations (1997–99) at Radość Kamieniecka, where well known medieval barrow cemetery (typical for Luka Raykavetskaya culture) and a Roman Period settlement were already found (Fig. 1), confirmed previous information but added also unexpected new finds. A cemetery of 18 graves has been explored there, one of them (grave 1) can be precisely dated to the middle La Tène Period, others only generally to the Iron Age. Stroked potsherds found in a few graves could be linked with a horizon of stroked pottery known from the sites of the eastern Podlasie in Poland. Grave 1 has an almost rectangular grave pit, 160×80–100 cm, orientated NW-SE, depth about 90 cm, with light grey filling with traces of charcoal and ashes (Fig. 2). In the grave 910 g of burnt bones were found. According to an anthropological analysis it were bones of a man, adultus, and a child, infans I. The grave assemblage consists of two iron brooches of middle La Tène type (Kostrzewski type B), 11 potsherds from several different vessels, a piece of melted light green glass, and a piece of slag. One of the brooches is decorated with an iron ball fastening a foot to the bow and a smaller ball just cut on the wire (Fig. 3). A few flint tools found in two groups could have been deposited intentionally in the grave pit. The brooches allow to date the grave to the phase La Tène C1 (C1b) according to Celtic chronology, or to the phase A1 of the Pre-Roman Period according to the central European chronology. A brooch with special decoration (big ball – small ball) has close analogies in the finds from Reginów, pow. Warszawa zachód, and from Drozdowo, pow. Płońsk, woj. mazowieckie, both found in cemeteries but without clear context. Similar brooches were also found at Sierpów, pow. Zgierz, woj. łódzkie (stray find) and at Kujawki, pow. Wągrowiec, woj. wielkopolskie, which served in J. Kostrzewski’s typology as a pattern example of type B (Fig. 4, 5). Similar but not identical decoration can be seen on brooches found in the vast territory of the La Tène Culture – like Bohemia, Moravia, Bayern and Switzerland. Some analogies can also be found in the Jastorf Culture and the Gubin Group. In my opinion brooches of Radość-Kujawki type, although based on Celtic pattern, were however produced in local workshops. They can be dated to the La Tene C1b or phase A1 of the late Pre-Roman Period. The cultural identity of that grave is more difficult to set. Both brooches could be linked with the Przeworsk Culture, but the grave form is quite different. More obvious is an attempt to link that grave with the Zarubintsy Culture because of the grave form and burial rite, but there is a huge gap (almost 300 km) between this cemetery and nearest sites of the Zarubintsy Culture. The problem must, till now, remain unsolved. The grave 1 from Radość could be however set in a horizon of strong influences of Celtic and Jastorf Cultures resulting in emerging of the Przeworsk Culture and having a clear impact on the Zarubintsy and Poieneşti-Lukaševka Culture.