This paper presents the results of two years research into the morphological properties of so far unexplored olive phenotype (phenotype 'X') in Šestanovac, location Doci and compare the same with three olives 'Oblica' in the immediate vicinity. Samples of leaves, flowers, fruits and seeds were analyzed during 2014. and 2015., according to the international method IOOC (International Olive Oil Council). The analysis of the data obtained showed statistically significant differences for all studied traits leaf, fruit and stone except for fruit weight and width of seeds.