| Issuer | Tonga |
| Year | 1981-1996 |
| Type | Commemorative circulation coin |
| Value | 20 Seniti |
| Currency | Pa`anga (1967-date) |
| Composition | Copper-nickel |
| Weight | 11.3 g |
| Dimensions | 28.5 mm |
| Thickness | 2.60 mm |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | KM#70, Schön#55 |
| Obverse description | Portrait of Taufa`ahau Tupou IV in uniform |
| Obverse script | Latin |
| Obverse lettering | FAO TONGA 1990 |
| Reverse description | Sweet Potatoes |
| Reverse script | Latin |
| Reverse lettering | FAKALAHI ME`AKAI 20 SENITI |
| Edge | Reeded |
| Mint | Royal Australian Mint, Canberra,Australia (1965-date) Royal Mint, Llantrisant, United Kingdom (1968-date) |
| Mintage | 1981 - Royal Australian Mint - 610 000 1990 - Royal Australian Mint - 610 000 1991 - Royal Australian Mint - 1994 - Royal Australian Mint - 680 000 1996 - British Royal Mint - |
| Catalog ID | 1760935430 |
| Comments |
