■ Obverse : ‘He Kaitiaki no nga tai ki te Tonga’ / Southern Guardian’ … in centre : emblem of the ship

■ Reverse : HMNZS OTAGO / P148 / ROYAL NEW ZEALAND NAVY … in centre : image of ship

■ Dimensions : 45.0 mm … ■ Weight : 38.7 g

■ Materials : gold finish … with pale blue and white enamel