Instrumental neutron activation analysis and X-ray techniques have been applied for the determination of 24 major, minor and trace elements (Al, Ca, Ce, Co, Cr, Cs, Eu, Hf, Fe, K, La, Lu, Na, Rb, Sb, Sc, Si, Sm, Ta, Tb, Th, Ti, Yb and Zn) in three or four different groups of vases (Protocorinthian, Thapsos Class, Late Geometric Corinthian and Aigion Crater). A close agreement for all elements examined between the pottery specimens of all groups was found. The matching in chemical composition of the four groups of vases strongly suggests the same origin for all of them.