In 1994 the then district museum in Ciechanów was presented with forty-seven metal objects dating to Bronze Age through to the modern age, stray finds from the area near the village of Rzeczki, Ciechanów County, in northern Mazowsze. The group included a fragment of a chair-shaped spur found at the village of Grędzice a few kilometres away (Fig. 1). This bronze base of a spur with an hourglass-shaped heel band still retains a fragment of its profiled neck, with some traces of corrosion, suggesting the presence of an iron prick (Fig. 2). Based on the surviving fragment the artefact has been attributed to spurs of group IIc according to Roman or type 20 according to Jahn (E. Roman 1997, p. 170; M. Jahn 1921, p. 65, fig. 20). The largest number of specimens of this type is known from Mazowsze, although some individual spurs were recorded in the region of the Vistula River mouth, and in Lower Silesia. Their chronology falls within the Early Roman Period, suggesting that the spur should be attributed to the Przeworsk Culture.