The Royal Philatelic
Society, London
www.rpsl.org.uk
www.cnep.fr
Stamp auctions
and coin auctions by Corbitt Stamps
The Collector's Club of New York
www.collectorsclub.org
ABPS - The
Association of British Philatelic Societies
www.abps.org.uk
Po & Po
www.po-en-po.nl
The
Netherlands Philatelic Circle
www.netherlandsphilatelic.org.uk
The Czechoslovak Philatelic Society of GB
www.cpsgb.org.uk
Postzegelveilingen Van Looy & Van Looy
www.vanlooystampauctions.com
Postzegelveiling Rijnmond
www.rynmond.com