Inca Bolo Weights from Peru, ca. 1300 - 1500 A.D. A nice pair of Inca bolo weights from Peru, ca. 1300 - 1500 A.D. These are 1-7/8" & 1-3/4" long and are carved from basalt or granite. Nice examples of ancient weapons. Ex Gallatin estate. Value range: $200 - $300.