Home / Stamps / AUSTRALIA / DECIMALS (after 1966) / DECIMAL 2020 - 2029 / AUSTRALIA – 2020 ‘CITIZEN SCIENCE’ Set of 4 MNH [E3631] AUSTRALIA – 2020 ‘CITIZEN SCIENCE’ Set of 4 MNH [E3631]Description SG 5289-5292 MNH – Fresh Mint Never Hinged Price(AUST) $8.50 1 in stock Buy with – OR – Add to cart SKU: E3631 Categories: AUSTRALIA, DECIMAL 2020 - 2029, DECIMALS (after 1966), Stamps