Royal Cypher Medal

The Royal Cypher Medal was awarded to individuals who distinguished themselves in the service of the Monarch.
The medal is awarded in five classes:
Class I is entirely set with diamonds.
Class II has a red-enameled cypher with a diamond-set border.
Class III has a royal cypher in gold with red enamel.
Class IV is in silver with a royal cypher in gold.
Class V is in silver.
Several variations of this medal have been issued. King Mongkut's Royal Cypher Medal (1869)
King Chulalongkorn's Royal Cypher Medal (1901)
King Vajiravudh's Royal Cypher Medal (1910)
King Prajadhipok's Royal Cypher Medal (1926)
King Ananda Mahidol's Royal Cypher Medal (1937)
King Bhumibol Adulyadej's Royal Cypher Medal (1952)
King Vajiralongkorn's Royal Cypher Medal (2019)