Several stamps are expected to hammer down for more than $1 million, with the rarest being one of two known one-cent "Z" Grill stamps from 1868. If sold for its estimate of $4 to $5 million ...

Often this came in the form of newspaper advertising. But Don Stewart of MacLeod’s Books has a rare collection of Buy Canadian stamps, as well as a 12-stamp series that urged Winnipeggers to buy ...