The Dr Josef Altmann Collection of the Départements Conquis – Prussia, Saxony, and Thurn and Taxis. Heinrich Koehler, Wiesbaden, GermanyFriday 20 November 2020 Realisations can be found at: www.heinrich-koehler.de
German and International Philately Heinrich Koehler, Wiesbaden, GermanyMonday 16 November 2020 - Saturday 21 November 2020 Realisations can be found at: https://www.heinrich-koehler.de
The Chris King Collection of Schleswig Part 1 Heinrich Koehler, Wiesbaden, GermanyFriday 20 November 2020 Realisations can be found at: www.heinrich-koehler.de