TONGA. Government of Tonga & National Reserve Bank of Tonga. 2, 5, 10 & 20 Paanga, 1978-95. P-20bCS1, 21bCS1, 22bCS1 & 29s. 1 Specimen, and 3 Collectors Series Specimens. PMG Choice Uncirculated 63 to Gem Uncirculated 66 EPQ. 4 pieces in lot. Pick 29s in CU63, and Tonga 20bCS1 to 22bCS1 in gem. No PMG Choice Uncirculated 63 to Gem Uncirculated 66 EPQ.