Country: Bolivia Year: 1939 Type or Image: Bolivia hosts numerous active and extinct volcanoes across its territory. The obverse of this coin displays what I believe is the Sajama volcano. Material: Not Identified Denomination: Cincuenta Centavos Diameter: 1.45" 29.14 x 1.84 mm Bezel: Rope Edge Select the style and length of your neck chain from four popular choices. The chain you select will either 1.7omm or 2.00mm thick. The neck-chain is included in the price.