LONGO', appears on the lower left-hand edge of the central design, while the respective engraver's initials appear on the lower right-hand edge, namely 'MAC inc' (on the 1 and 20 cent coins), 'LDS inc' (on the 2 and 50 cent coins), 'ELF inc' (on the 5 cent and €1 coins) and 'MCC inc' (on the 10 cent and €2 coins). The upper part of this design is surrounded by the semicircular words 'SEDE VACANTE' and the year of issue in Roman numerals, i.e. The second series, issued between June 2005 and March 2006, shows the coat of arms of the Cardinal Chamberlain, the acting head of state of the Vatican City, superimposed on the emblem of the Apostolic Chamber in the centre of the coin. The first series, showing Pope John Paul II, was issued between 20. There are five series of Vatican City coins in circulation.
