In July 2019, a bronze spiral bracelet and an ancient potsherd were discovered by chance in the bed of the Pilica River, near its confluence with the Vistula. The artefacts were recovered from the bottom of the river, by the southern bank of a small sandy island located between the villages of Pilica (Warka Commune, Grójec County) and Boguszków (Magnuszew Commune, Kozienice County) (Fig. 1, 2). As a result of a professional archaeological investigation, carried out with the help of a team of underwater archaeologists, ten more sherds from ancient earthenware vessels were obtained from the immediate vicinity of the original find (Fig. 3). The potsherd assemblage consists of two bases, two base sherds, six body sherds and one sherd of either a disc-shaped plate or a massive base (Fig. 4–6). Most sherds show signs of a long-term stay in an aquatic environment. One sherd has been identified as modern, the rest should be associated with the Lusatian culture from a period covering the later phases of the Bronze Age and the Early Iron Age. Of note is the strongly smoothed lower part of a vessel with thickened base (Fig. 4:b, 5:b, 6:b). It may be a fragment of a so-called Ulwówek beaker/mug, a ceramic form known mainly from sites located to the east of the Middle Vistula, in the basin of the rivers Wieprz and Bug. The closest finds of vessels identified as the Ulwówek type are known from the Lusatian culture settlement and cemetery at Maciejowice, Garwolin County, and from the cemetery at Radom Wośniki. Ulwówek type beakers/mugs are commonly dated to Bronze Age IV, although some specimens (e.g., from Radom), due to certain specificity of their form and decoration, may be dated to Bronze Age V and later. The remaining sherds mostly come from roughened, medium- and thick-walled vessels, made from a clay body with ample coarse-grained mineral temper, often white and pink in colour (Fig. 4). They present features of the Lusatian culture earthenware from the end of the Bronze Age and the beginning of the Iron Age. At present, it is not possible to clearly indicate the place (or places) from which the pottery was washed away and transported by the current. Among the Lusatian culture sites located along the river, the settlement at Michałów-Parcele, Warka Commune (Fig. 7), situated on a sand-and-gravel elevation occasionally undercut by the river, should be foremost considered. The site, excavated in the 1970s, has yet to be analysed and published. The ten-coil bracelet was made from a plano-convex bronze strip with round wire terminals (Fig. 8, 9). It is decorated with repeating alternating motifs of wide bands composed of narrow transverse grooves and oblique crosses, some of which have a circled dot symbol punched at the point where the arms intersect (Fig. 10). The form and decoration of the bracelet resemble in style the adornments of the “Stanomin type”, considered products of a Lusatian culture metallurgical centre from Hallstatt period D, located in Kuyavia. The most typical “Stanominian” decorative element of the Pilica bracelet is the recumbent cross motif, encountered in different variants on the adornments regarded as “Kuyavian ornaments”, throughout the entire range of bracelets in particular (Fig. 12:a–e.j–m). However, the number of coils, strip parameters and type of terminals distinguish this specimen from both the “short” and “tall” bracelets in J. Kostrzewski’s classification (1954), recently modified by M. Maciejewski (2019). In these particular features, the Pilica bracelet resembles three, likewise atypical, decorations discovered at Zabieżki, Otwock County, and near Słupia (Nowa?), Kielce County (Fig. 12:m), which were accompanied by “Kuyavian” ankle- and neck-rings as well as Stanomin type ankle-rings of the Mazovian variant in the classification by M. Mogielnicka-Urban (2008). The metal strips they were made of were more massive than in the case of the other “tall” bracelets decorated with crosses. Their terminal coils, in the form of smooth, round wires, find no analogy among other similarly decorated specimens. Such a shape of terminals is characteristic of tall, specifically decorated bracelets consisting of over a dozen coils, made from a not overly broad strip of roughly triangular cross-section, discovered (also together with “Kuyavian” items) in eastern Mazovia and Podlachia (Fig. 12:p). The four bracelets were probably made in workshops located in the area where the canons of craftsmanship and decorative arts, represented by the “classic” Kuyavian products, intermingled with designs valued by the local market. The chemical composition of the alloy of which the Pilica bracelet was made is characteristic of the majority of goods from the Hallstatt period (Appendix 1). Due to the absence of signs of bronze manufacturing in the area in question, attempting to locate the workshops is not possible. A few other finds of “Kuyavian bronzes” are known from the Lower Pilica region; they were found on their own or as parts of multi-component hoards (Fig. 7). Their characteristics and the context in which they occurred indicate wide-ranging connections of this area and various cultural zones, especially those in southern and south-eastern Europe.