Mexico produced this bullion coin as part of their Pre-Columbian Mayan series. This 5 Peso (1 Onza) - 1 Troy Ounce coin shows a likeness of a tomb in the ancient Mayan city of Palenque (Lapida Tumba de Palenque) on the reverse, with the national arms on the obverse. Coin may have slight contact marks.
With a mintage of ONLY 4,500 this is not often available! Listed in Krause as KM#575.