The name given to a well-known series of British definitive stamps first issued in 1967. The design of the stamp depicts a plaster portrait of Queen Elizabeth II created by artist Arnold Machin.

U.S. marginal marking block with the selvage bearing the inscription "Mail Early (in the Day).'' This first appeared on U.S. marginal selvage in 1968. It was subsequently replaced by the copyright notice. ME blocks typically consist of four or six stamps.

U.S. stamp booklets manufactured using stamps normally issued in individual panes, packaged in generic blue cardboard covers and dispensed by vending machines.

Strictly speaking, the distinctive eight-pointed cross used as the emblem of the Knights of St John of Malta and used frequently in both the stamps and machine cancellations of Malta, as well as the labels of the Sovereign Order of the Knights from their headquarters in Italy. It is the nickname given by philatelists to the obliterating device introduced in 1840 and intended to cancel the earliest British stamps. These obliterators are, however, more likely to have been modelled on the Tudor rose emblem. They were superseded in 1844 by numeral obliterators. Distinctive crosses were used by a number of offices, usually when replacements were supplied after the initial issue. Originally red ink was used, changed to black in 1841, but other colours were occasionally employed.