Reverse In the central part, the numeral '100', with segments of relief horizontal lines to the left and right. Above are Japanese characters meaning the Showa era '昭和', below - '四十一年' - the 41st year from the beginning of Emperor Hirohito's reign. The edge is decorated with decorative denticles.
Obverse In the central part, a sheaf of rice is depicted. Above are Japanese characters '日本国' meaning - State of Japan, below - '百円' - one hundred yen. The edge of the coin features decorative raised denticles.