VII. King Rama was the ruler of Thailand from 1925 to 1935, when he abdicated and handed it over to his nephew, King VIII. to King Rama.VII. Under Rama, Thailand changed from an absolute monarchy to a constitutional monarchy. Its currency during this period was the Thai baht, whose value was pegged to the US dollar. The coins usually featured the portrait of the king, the royal coat of arms, the royal monogram, the value of the coins and the year of issue.