This commemorative marks Crown Prince Maha Vajiralongkorn's designation as heir apparent, a status formally confirmed decades earlier in 1972 when Rama IX named him crown prince at age nineteen — the first such designation under the 1974 constitution's succession provisions. Vajiralongkorn would not ascend the throne until 2016, following his father's death after a 70-year reign, the longest of any monarch in Thai history.
This commemorative marks Crown Prince Maha Vajiralongkorn's designation as heir apparent, a status formally confirmed decades earlier in 1972 when Rama IX named him crown prince at age nineteen — the first such designation under the 1974 constitution's succession provisions. Vajiralongkorn would not ascend the throne until 2016, following his father's death after a 70-year reign, the longest of any monarch in Thai history.