The Richard Frajola Collection of Great Britain – Queen Victoria Line Engraved Imperforate Adhesives Heinrich Koehler, WiesbadenFriday 19 September 2025 Realisations can be found at: http://www.heinrich-Koehler.de
The Paris Library of Philatelic Literature Heinrich Koehler, WiesbadenWednesday 15 October 2025 Realisations can be found at: https://heinrich-koehler.de
German and International Philately Heinrich Koehler,WiesbadenThursday 18 September 2025 - Saturday 27 September 2025 Realisations can be found at: http://www.heinrich-koehler.de
The Hasse Brockenhuus von Lowenheim Collection of Jaipur and Indore Heinrich Koehler, Wiesbaden, GermanyMonday 19 April 2021 Realisations can be found at: www.heinrich-koehler.de
The Albert Schroder Collection of Faroe Islands 1756-1945 Heinrich Koehler, Wiesbaden, GermanyMonday 19 April 2021 Realisations can be found at: www.heinrich-koehler.de
The Troubadour Collection – Imperial German Shield Issues (Brustchilde) Heinrich Koehler, Wiesbaden, GermanyThursday 22 April 2021 Realisations can be found at: www.heinrich-koehler.de
The Werner Knuttel Collection of Bavaria 1849-1920 (Part II) Heinrich Koehler, Wiesbaden, GermanyFriday 23 April 2021 Realisations can be found at: www.heinrich-koehler.de
The Christopher King Collection of Schleswig (Part II) Heinrich Koehler, Wiesbaden, GermanyFriday 23 April 2021 Realisations can be found at: www.heinrich-koehler.de
The Dr Josef Altmann Collection (Part II) – Departements Conquis, Prussia, Saxony, Thurn and Taxis Heinrich Koehler, Wiesbaden, GermanyFriday 23 April 2021 Realisations can be found at: www.heinrich-koehler.de
The Erivan Collection – Old German States Heinrich Koehler, Wiesbaden, GermanySaturday 24 April 2021 Realisations can be found at: www.heinrich-koehler.de