Flaked obsidian C.800 BC-800 AD. Valley of Mexico, probably Teotihuacan, 7 5/8” length of elongated leaf form. Both sides well worked to rounded section. Exceptional workmanship with traces of soil adherence from burial. The Valley of Mexico which contains modern Mexico City is surrounded by volcanic mountains, the issue of which formed the obsidian from which weapons were produced. The finest example from the collection of a doctor who wintered in Acapulco in the 1950s and built a collection including many examples valued in the high four figures.