The Preslav Treasure was found in autumn of 1978 at the vineyard in Castana, 3 kilometres (1.9 mi) to the north - west of the second Bulgarian capital – Veliki Preslav. The excavations that followed revealed more than 170 golden, silver and bronze objects including 15 silver Byzantine coins belonging to Constantine VII, Romanos II and other artifacts dating far back to the period between 3rd and 7th centuries.