The Coronation Series is made up of six new Pa'anga notes and five new coins: 5 seniti, 10 seniti, 20 seniti, 50 seniti, and for the first time a $1 Pa'anga coin. There will be no more one and two seniti coins.
The 5s, 10s, 20s, and 50s coins, made out of nickel plated steel, carry a portrait of Tupou VI. The $1 coin is made out of aluminium-bronze, with a portrait of George Tupou V.
The coins have been made by the Royal Australian Mint in Canberra.
I hope that better images will be known soon, but here's what I have found right now.
5 seniti in nickel plated steel:
10 seniti in nickel plated steel:
20 seniti in nickel plated steel:
1 Pa'anga in aluminium-bronze:
(news by Pabitra Saha)