Trier is located at the west German border triangle close to Luxembourg and France, and will host the national exhibition NAPOSTA 2023 next July. The organisers, the Deutsch-Französische Briefmarkenclub e.V. Trier, who will celebrate their 50th anniversary in 2023, invite exhibitors from Germany and abroad to participate. Application forms are available in German, French and Dutch. According to demand, the exhibition will accommodate as many as 2000 frames.
Bulletin 1 is available here: https://www.fepanews.com/wp-content/uploads/2022/11/naposta_2023_info1.pdf