Covers: Romania
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Pre-stamped envelope, Submarine Delfinul -The XII Biennial Polar Philately, Submarines at the North Pole, 26 Sep` 1998, Bucarest |
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30th anni` of USS Nautilus, SSN-571, Under the North Pole 3rd August 1958, 3 August 1988, Ploiesti |
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25th anni` of USS Nautilus, SSN-571, Under the North Pole 3rd August 1958, 3 August 1983, Calarasi |
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