City of London swords City of London swords The City of London swords are five two-handed ceremonial swords owned by the City of London, namely the Mourning (or Black) Sword, the Pearl Sword, the State (or Sunday) Sword, the Old Bailey Sword and the Mansion House Justice Room Sword. A sixth sword, the Travelling Sword of State, replaces the Sword of State for visits outside the City. They are part of the plate collection of Mansion House, the official residence of the Lord Mayor of London. The Mourning Sword is used on occasions of ceremonial mourning and has also been known as the Black
Chancellor of the Exchequer of its interest rates. The chancellor also has oversight of public spending across Government departments. The holder of the office of Chancellor of the Exchequer is "ex officio" Second Lord of the Treasury as a member of the commission exercising the ancient office of Lord High Treasurer. As the Second Lord, his official residence is 11 Downing Street in London, next door to the residence of the First Lord of the Treasury (a title that has for many years been held by the prime minister), who resides in 10 Downing Street. While in the past both houses were private residences,