African-Eurasian Agreement on Waterbirds

400 Years of the Leiden Pilgrim Fathers (1620-2020)

Written in: Dutch • Willem Hogendoorn • March 20 2020

On March 27, 2020, the Pilgrim Year was to be officially opened in Leiden with lectures, walks, and a concert. However, due to the coronavirus, the festivities have been postponed. But who were the Pilgrims actually, and why did they go to Leiden first?...

The stamps of Åland in 2001

Written in: Dutch • Cees Janssen • 30 December 2017

The second year in which the value denomination on the stamps was stated in two currencies. Six Finnish marks, denoted by FIM, stood at equal to one euro. But were the calculations correct if, for example, one converted a value of 3,50 marks...

Sjaak Van Tiel over 40 Years of Collecting Postage Stamps (1986): I have many old stamps (strips), mainly from municipalities (including some that no longer exist) and a few from – I think – the royal family. Perhaps also Veldp…

Written in: Dutch

Peter over Delta Works: The Netherlands and water with climate adaptation: Thank you very much for the nice explanation of the design.

Written in: Dutch

Annet Hogendoorn over The piss-pots of Tilburg: Another super fun blog post, and educational :)

Written in: Dutch

Lars over Delft Blue Ceramic stamp a 'deception stamp': Now just get those blueprints out of the catalog..

Written in: Dutch

Erik Boeré over Delft Blue Ceramic stamp a 'deception stamp': The best solution is probably to ignore the ceramics stamp altogether. Fortunately, as the NVPH/Catalog Committee, we already have…

Written in: Dutch

Yvonne Kruse over The piss-pots of Tilburg: What a nice article, Willem!

Written in: Dutch