| Obverse description | Head Taufa’ahau Tupou IV facing right. |
|---|---|
| Obverse script | Latin |
| Obverse lettering | TAUFA`AHAU TUPOU IV · ONE HAU 1981 TONGA · |
| Reverse description | Princess Diana and Prince Charles facing each other, crown above. |
| Reverse script | Latin |
| Reverse lettering | TONGA-UK FRIENDSHIP TREATY 1881-1981 ROYAL WEDDING |
| Edge | Reeded |
| Mint | |
| Mintage | 1981 - - 500 1981 - Proof - 2 500 |
| Numisquare ID | 5167141510 |
| Comments |