When the blade was cleaned, the sword was discovered to be from the 12th century, making it one of the oldest in existence.

Mediaeval Swords from Southeastern Europe: Material from 12th to 15th Century. Beograd. Alexander D.G. 1985 ... Nondestructive Testing of a Rare Crusader Sword. The NDT Technician 13:1-8. Jegdić B., ...