The Pyx Chamber is one of the oldest surviving parts of Westminster Abbey. This low vaulted room off the East Cloister is part of the Undercroft, underneath the monks' dormitory, which was built about ...

THE trial of the Pyx is the formal testing of the coin of the realm, to ensure its being of the requisite weight and fineness. The name is derived from the Pyx, or chest, in which the coins ...