1978, Kingdom of Tonga. Proof Silver 2 Paanga CoinMint Year: 1978Mintage: 750 pcs.Reference: KM-59a.Denomination: 2 PaangaMaterial: Silver (.999)Weight: 42.1gmTonga (Tongan: Puleʻanga Fakatuʻi ʻo Tonga), officially the Kingdom of Tonga, is a Polynesian sovereign state and archipelago comprising 177 islands with a total surface area of about 750 square kilometres (290 sq mi) scattered ...