Reverse Central composition: ten cows grazing in a meadow. Along the upper edge from left to right, the motto in Maori: «FAKALAHI ME'AKAI» - Grow more food. Below, the inscription in English: «10 SENITI» - 10 seniti.
Obverse Central bust portrait of King of Tonga Taufa'ahau Tupou IV. Above it, the English text: «F.A.O.» - Food and Agriculture Organization. Along the lower edge, the country name in English and the year of issue: «TONGA 1979» - Tonga 1979.