Home / Stamps / THEMATICS / TRANSPORT / SPACE / RUSSIA – 1977 ‘USA – USSR EXCHANGE’ + POLAR BEAR and PENGUIN Cachets [A8422] RUSSIA – 1977 ‘USA – USSR EXCHANGE’ + POLAR BEAR and PENGUIN Cachets [A8422]Description Fine Condition. See scans. Polar bears in the Antarctic ? Price(AUST) $6.00 1 in stock Add to cart Buy with SKU: A8422 Categories: EUROPE, POSTAL HISTORY, SPACE, Stamps, THEMATICS, TRANSPORT, WORLD