This graduate thesis presents two topics, the making of copies in terms of complete presentation of ceramic vessels and FT-IR analysis of samples selected which represent variety of entire archaeological material recived. Archaeological ceramics originates from the late bronze age locality Dugiš, which is situated by the river Cetina by borough Otok near town of Sinj. Archaeological material has been transfered from depot of The Archaeological Museum of Split to conservation-restoration workshop of archaeological heritage and metal of The Art Academy of University in Split. Decision on producing copies has been made based on the idea of a non-invasive consrevation-restoration treatment, which enables complete presentation of original appearance of vessels without any intervention on iriginal fragments. In future, this allows simpler joining existing fragments with the ones which are yet to be discovered. A copy produced in plaster and tinted according to the pattern of original archaeological ceramics can be displayed next to its belonging fragment. FT-IR analysis of 13 samples selected had been conducted in laboratory of The Art Academy of University in Split. IR spectra shows low to medium quality of clay used in production of late bronze age ceramics, which confirms the hypothesis that local ceramics production of that time was of lower technological standard.