Squared circle postmarks are booming with collectors, offering a vast field of study, rising values and fresh discoveries. Originating in Britain in 1879 as an improvement on duplex handstamps, they took hold in Canada in the 1890s and span dozens of towns, multiple stamp issues and a spectrum of hammer rarities and coloured strikes. Continue reading →
An 1893 eight-cent Small Queen cover features a squared circle hammer strike.
