Society membership and principal philatelic positions held :
Dutch Philatelic Academy.
Collectors Club New York, Past Governor.
Collections and philatelic interests :
Postal history of the Netherlands and its Colonies.
International awards :
Sindelfingen 2000, Golden Posthorn.
Amphilex 2002, Court of Honour.
Naposta 2005 Grand Prix Master’s Class.
Iphla 2012, Grand Prix literature.
Ibra 99, Philexfrance 99, The Stamp Show London 2000, Belgica 01, Philanippon 01, Philakorea 02,
España 2004, Singapore 2004, Washington 2006, Efiro 08, Portugal 2010, Indonesia 2012, Italia 2018,
Stockholmia 2019, Large Gold.
Awards and medals Van der Willigen 2003, Brühl 2003, König 2006, Lee 2008, Luff 2009, Costerus 2010,
Crawford 2012, Lindenberg 2013.
Publications :
The First Postage Dues – Holland’s ‘3S’ Markings 1667-1811, 2002.
Netherlands Mail in Times of Turmoil, 3 volumes, 2010-2011.
The Paper Trail: World War II in Holland and its Colonies as seen through Mail and Documents (with
Jeffrey Groeneveld), 2018.
Spoken languages :
Dutch, English, French, German.