In the Indian subcontinent, earliest available Bronze age swords of copper were discovered in the Indus Valley Civilization sites in the northwestern regions of South Asia. Swords have been recovered in archaeological findings throughout the Ganges-Jamuna Doab region of Indian subcontinent, consisting of bronze but more commonly copper. Diverse specimens have been discovered in Fatehgarh, where there are several varieties of hilt. These swords have been variously dated to times between 1700–1400 BC, but were probably used more in the opening centuries of the 1st millennium BC.