柬埔寨。 1993年20瑞尔。 纪念币,为保护大象而铸,一面大象迁徙图案,另一面国旗。 CAMBODIA. 20 Riels, 1993. NGC PROOF-65 Ultra Cameo. KM-85. Commemorative issue struck to highlight elephants and their protection. Attractively designed with a traveling family of elephants displayed on one side and a bold depiction of the national flag above the denomination on the other.