- Gevraagd: Belgische perfins in de reeks Poortman
- New perfin catalogue of Norway
- Wanted: perfins from Ceylon
- Catalogue of the Perfins of Belgium, 2nd edition
- Result PCN internet auction I 21
- Results 20th Internet auction
- Results of the 19th PCN Internet Auction
- Request
- In Memoriam Jan Verhoeven
- Wanted: perfins with an image of a crab