" The first coin in the ninth reign " when King Bhumibol Adulyadej ascended the throne in 1946, a new set of circulation coins had not been produced during the reign as well during the year 1946.  -1950  during the process of continuing his studies at  Switzerland
 Until on September 11, 1951, the first circulation coin of the reign was issued.

Which, according to the tradition of "Thai currency" in the form of coins, is counted from high price to low price type, so the first coin in the reign of King Rama IX was an aluminum bronze coin.  Or as the villagers call it, a 50 satang brass coin.

- This coin contains 91% copper content.
 9% aluminum, the appearance of a copper coin has a golden color.  due to the composition of copper  and aluminum this ratio  brassize  instead of the red color of copper
 - The face price of the coin is 50 satang.
 - The edge circle is a gear around.
 - Diameter 23 mm.
 - Weight 4.50 g.

coin front
 - In the middle is a statue of His Majesty the King
 His Majesty King Bhumibol Adulyadej
 King Rama IX, half of the King, facing the King
 to the left

 inside the edge of the coin
 - On the left side there is a letter that says
 " Bhumibol Adulyadej "
 - On the right side there is a letter that says
 "Rama IX"

 back of coin
 - in the middle of the coin is
 National seal of the reign of King Rama V

inside the edge of the coin
 - The top in the middle has the word "Thai Government"
 - Aligned to the middle edge on the left side is the Thai number "50".
 - Aligned to the middle edge on the right side is the word " Sat."
 - Below is the year of manufacture "1950"

 by circulation coin
 price type 50 satang ( this format )
 was issued when
 September 11, 1951