An attractive collection of 74 covers featuring Antarctic and subantarctic postal history, with correspondence sent to and from the French Southern and Antarctic Lands (TAAF). The lot combines varied international frankings, expedition cachets, research-station cancellations, captains’ and crew members’ signatures, tax markings and numerous returned or redirected items. Diverse origins and frankings Alongside TAAF and French frankings, the collection includes correspondence bearing stamps from East Germany, Great Britain, Poland, Japan, Romania and Australia. Particularly interesting examples include Japanese and Romanian mail addressed towards Dumont d’Urville, British mail with PAQUEBOT and return markings, and Australian correspondence routed through Hobart. Single and multiple frankings provide an appealing variety of postal rates and combinations. Antarctic and subantarctic stations The selection includes material associated with Dumont d’Urville in Terre Adélie, Port-aux-Français in the Kerguelen Islands, Alfred Faure on Crozet, and Martin-de-Viviès on Amsterdam Island, together with Saint-Paul-related material. Station cachets include references to scientific activities such as geology, atmospheric research and ornithology, adding interest beyond the postal markings themselves. Polar expeditions and research vessels Numerous covers relate to French Antarctic expeditions to Terre Adélie during the 1970s and 1980s. Maritime cachets include vessels such as L’Astrolabe, Marion Dufresne, Gallieni, Austral, Albatros, Thala Dan and Polarstern. Highlights include an L’Astrolabe first-voyage cachet, illustrated Albatros patrol-vessel markings, Polarstern expedition material and covers connected with the resupply of remote island stations. Captains’ and crew members’ signatures Several covers bear handwritten signatures alongside ship cachets and endorsements such as “Le Capitaine”, “Le Commandant” and “Le Vaguemestre”, connecting the correspondence with the captains, crew and personnel responsible for handling mail aboard ship. Signatures are offered as present, without separate authentication. PAQUEBOT and mail posted at sea Many items feature PAQUEBOT, “Courrier posté à bord” or “Courrier posté en mer” markings. These identify maritime correspondence posted aboard ship and handed over for postal processing ashore. Tax markings and postage due A notable feature is the presence of “T” markings, sometimes accompanied by manuscript fractions or figures, indicating assessment for insufficient postage and a potential charge payable by the recipient. These provide scope for studying international postage-due procedures. The markings alone do not establish that the charge was collected. Returned and redirected correspondence Numerous covers bear “RETOUR À L’ENVOYEUR”, “RETURN TO SENDER”, “ADDRESSEE UNKNOWN”, “INCONNU” or “N’HABITE PAS À L’ADRESSE INDIQUÉE” endorsements. Crossed-out addresses, forwarding instructions and additional handling marks illustrate the difficulties of delivering correspondence to expedition members, ships and isolated research stations. Some items also show routing towards other remote destinations, including North Pole, Alaska. A varied collection for specialists in TAAF, polar exploration, maritime postal history, international frankings and returned mail. Condition varies, with folds, toning, opening wear, address deletions and other signs of postal handling. Please inspect all photographs carefully. The lot comprises 74 covers. Front and reverse photographs show the same items and are not additional pieces. I can combine the shippings strictly following the Catawiki rules. 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