Reverse In the central part of the reverse is a relief image of 3 yam tubers. Along the upper edge of the coin from left to right is the motto in the Maori language: «FAKALAHI ME'AKAI» - Grow more food, below - the inscription in English: «20 SENITI» - 20 seniti.
Obverse In the central part is a facing portrait of King of Tonga Taufa'ahau Tupou IV. Above it, the English text: «F.A.O.» - Food and Agriculture Organization. In the lower part, along the edge of the coin, is the country name in English and the year of issue: «TONGA 1996» - Tonga 1996.