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
Deutsche und Internationale Philatelie Heinrich KohlerTuesday 24 September 2019 - Saturday 28 September 2019German and International Philately Realisations can be found at: www.heinrich-koehler.de