bracelet (Wawrzynki) - metallographic analysis II Bronze Age
armlet (Kuźnice) - chemical analysis III Bronze Age
axe (Złotoria) - metallographic analysis III Bronze Age
object fragment (Brześć Kujawski) - chemical analysis Neolithic
trapezoidal plate (Inowrocław) - metallographic analysis Neolithic
armlet with symetrical discs (Kościelna Wieś) - chemical analysis II-III Bronze Age