About the Design:

Obverse
Effigy of king Tupou VI facing, date below

Lettering:
TUPOU VI
TONGA 2015

Reverse
Malau, a megapode Megapodius pritchardii, an endemic bird of the Tonga, denomination below

Lettering:
MALAU
10 SENITI

Edge
Reeded

Lettering: Features the Malau (Megapodius Pritchardii) which is the world’s smallest megapode and one of the rarest birds in the world. It is the only surviving megapode in Polynesia and is only to be found under the forest canopy on the Island of Niuafo’ou. The malau is on the international conservation lists as a critically-endangered species.

Composition    Nickel plated steel
Weight            2.79 g
Diameter    19 mm
Thickness    1.5 mm
Shape            Round