The PHSC is developing databases of the early postmarks of Canada, including the so-called broken circle (or split-ring) postmarks. The database for Ontario is complete, based on the original work from Bruce Graham's Ontario Broken Circles. This is being continuously updated via new reports that collectors send in to us. As well, we have, or will soon have, data from all of the early western and northern territories and provinces. We also expect to soon have data from Québec, Nova Scotia and Prince Edward Island.

If you'd like to learn more about Canada's early postmarks and our databases, see the introduction.

In addition to the searchable database, we will also provide static lists of certain broken circle subjects.