Cataloguing of all of the perfins on GB postage stamps is our main on-going project.
However many other surveys are undertaken by our members on various aspects
of perfins, some of which have developed into catalogues.
Lists of perfins on specific issues can be found in the "GB Stamps known with Perfins" section above.
For regional and some commemorative issues we have also published catalogues
Updates on some surveys also appear in our Bulletin.