Malaysia. Large Silver 15 Ringgit “Malaysian Gaur” Coin. Mint Year: 1976 Reference: KM-19. Denomination: 15 RinggitMaterial: Silver (.925) Diameter: 38.61mm Weight: 28.28gm The gaur (Bos gaurus; /ɡaʊər/), also known as the Indian bison, is a bovine native to South Asia and Southeast Asia, and has been listed as Vulnerable on the IUCN Red List since 1986. The global population was e ...