The great civilizations of the old world worked in bronze for art, from the time of the introduction of the alloy for tools and edged weapons. "Dancing Girl" from Mohenjodaro, belonging to the Harappan civilization and dating back to c. 2500 BCE, is perhaps the first known bronze statue. The Greeks were the first to scale the figures up to life size. Few examples exist in good condition; one is the seawater-preserved bronze "Victorious Youth" that required painstaking efforts to bring it to its present state for museum display. Far more Roman bronze statues have survived.