Lot of 30 Covers — from / to the Soviet North Pole 8 to 19 drifting station A lot of 30 original Soviet postal covers (1950s–1970s), all related to Arctic, Polar and scientific exploration themes, many sent from or commemorating North Pole drifting stations (Северный Полюс), research vessels, and scientific institutions. The covers bear genuine Soviet stamps, clear cancellations, and period cachets; several are addressed to Germany (Hans Stock, Ruth Stock), showing international scientific correspondence of the Cold War era. Key Features 15 covers, each with original Soviet postage, cancellations, and cachets. Multiple items referencing Северный Полюс (North Pole) drifting stations and Arctic scientific missions. Attractive thematic illustrations: icebreakers, polar bears, research ships, scientific emblems, and expedition insignia. Stamps depicting space exploration, ships, wildlife, and scientific achievements of the USSR. Several covers show special Arctic commemorative postmarks and institutional cachets. Mixed usage: official mail, commemorative covers, and scientific correspondence. Many covers addressed to Germany, reflecting international exchange between Soviet research institutions and European recipients. I don't combine shippings Following a recent change in international sector regulations, specifically Articles 18 and 19 of the Universal Postal Convention, starting from January 1, 2026, it will no longer be possible to send items (goods with or without commercial value) using International Registered and International Insured services, which will continue to be used exclusively for sending documents. It means that starting from January 1st, 2026, I will ship abroad only by "POSTE DELIVERY INTERNATIONAL STANDARD" starting from 25,80€ without insurance