Leonardo da Vinci created the Alabaster skull, as confirmed by the historians after 24 years of study.
Winfried and Waltraud Rolshausen found the strange skull in Homburg in 1987 but they didn't suspect at that time that the object was priceless, News.com.au reported.
According to a Vienna medical journal reported by the History Blog, the director of an anatomical museum in Paris saw the skull in 1986 and recognized it to be much more than just a piece of art. It was a "remarkably accurate" anatomical model of a skull made to one-third scale.
However, historians are still not sure the reason behind making such an anatomically correct skull as at that time, dissection of human bodies was illegal but da Vinci was fascinated by anatomy and conducted much of his research in secret and there were also references, which hinted that he had detailed model of skulls in his possessions.
Historians also pointed out that the model has remarkable similarity to da Vinci's famous drawings of the human cranium in his surviving papers, dating from 1498.