Inca Tumbaga Tupo from Peru, ca. 1300 - 1500 AD. A lovely Inca tupo from Peru, ca. 1300 - 1500 AD. This fine tumbaga example is 6-3/4" long and is topped with a nicely detailed deer head. A classic example, intact suspension loop, good mineral deposits. Ex Gallatin estate. Value range: $250 - $350.