I hereby give My Sanction to the Ordinance concerning the form, etc. of the extraordinary supplementary coin of 50 sen and cause the same to be promulgated. Signed: HIROHITO, Seal of the Emperor This fifteenth day of the eighth month of twenty-first year of Showa (August 15, 1946) Countersigned: Prime Minister YOSHIDA Shigeru Minister of Finance ISHIBASHI Tanzan Imperial Ordinance No. 392 In accordance with the provisions of Article 4 of the Law concerning the Extraordinary Currency, the material, quality, weight, and form of the extraordinary supplementary coin of 50 sen shall be decided as follows: 50 sen Coin Material Brass Quality 600–700 parts of copper and 400–300 parts of zinc Weight 4.5 grammes Form Diameter: 23.5 milimetres Supplementary Provision: The present Ordinance shall come into force as from the day of its promulgation.