In January 2018, a plate brooch from the Migration Period, found in the village of Rajszew near Warsaw, was presented to the Historical Museum in Legionowo (Fig. 1, 2). It represents Animal Style I (B. Salin 1904, 214–245). Anthropo- and/or zoomorphic imagery on the head enables its attribution to phase B of said style (G. Haseloff 1981, 180–196). Metallurgical analyses showed that the body was cast from a copper alloy. The pin was also made from a copper alloy but containing a different share of this chemical element (Table 1). It is currently not possible to indicate an unambiguous analogy to the artefact presented. A bronze brooch discovered in grave A9 at the site of Malaâ Lipovka, Kaliningrad Oblast, Russia (Fig. 4:1), dated to the first half of the 6th century (M. Rudnicki, K. Skvortsov, P. Szymański 2015, 592), seems the most similar. The shape of protrusions with representations of animal heads decorating the head and foot of the Rajszew brooch is the most similar to corresponding elements of a brooch found in Stora Gairvide on Gotland (Fig. 4:2), dated to the first half of the 6th century (M. Rudnicki 2014a, 285). The brooch has a rectangular head with relief decoration and four protrusions. Other specimens with similarly decorated rectangular heads and foot terminals come from Tałty, Mrągowo County, a stray find (Fig. 4:3), Tumiany, Olsztyn County, grave 37 (Fig. 4:4), and Babięta, Mrągowo County, grave 109 (M. Rudnicki 2014a, 283–287). These analogies do not allow us to indicate whether the Rajszew brooch was an import from the area of the Olsztyn Group or from Scandinavia. Head decoration in the form of stylised protrusions appears in both of these regions. However, the brooches differ in proportions and size – Masurian specimens are smaller. Such is also the case with the analysed example.