Reverse In the central part of the reverse is a relief image of a pig. Along the upper edge arc is the motto in the Maori language: 'FAKALAHI ME'AKAI' - Grow More Food, below is the inscription - '1 SENITI' - 1 seniti.
Obverse In the central part is an ear of corn. Below it is the year of issue: 1979. In the upper part, along the edge arc of the coin, is the country name in English: 'TONGA' - Tonga.