Membre Corr. Etranger                           18.10.2014

Collections :

* Philatelic literature
* Philatelic history

Philatelic merits :

* Sieger medal for Literature 2003 and 2008
* Heirich Köhler medal 2008
* Hermann Deninger award 2008
* FEPA medal for exeptional study and research 2012
* Lindenberg Medal 2013
* Roll of Distinguished Philatelists 2014

Publications :

* More than 80 books about philately and philatelic history
* More than 3000 articles in stamp journals worldwide

Membership of foreign academy’s or society’s :

* Fellow of the Royal Philatelic Society London
* Berliner Philatelisten Klub von 1888 e.V.
* Consilium Philatelicum (president)
* AIJP (president)
* Club de Monte-Carlo

Philatelic funtions :

* Editor-in-chief of «philatelie» (1989-2016), The Philatelic Journalist, APHV-Magazin.
* Editor and publisher of «PHILA HISTORICA»
* PR-Consultant of IBRA 99 and NAPOSTA 2001
* President of the organizing team of IBRA/NAPOSTA 2009, IPHLA 2012