AMSTERDAM, March 9 (Reuters) - A Dutch historian found a unique 1,000-year-old medieval golden treasure, consisting of four golden ear pendants, two strips of gold leaf and 39 silver coins, the Dutch National Museum of Antiquities (Rijksmuseum van Oudheden) announced on Thursday. While it will remain a mystery why exactly the treasure was buried, the museum pointed out there was a war raging between Dutch regions West Friesland and Holland in the middle of the 13th century, with Hoogwoud being the epicentre. See here for a complete list of exchanges and delays