LONDON.- War, Plague and Fire, a new gallery exploring the tumultuous century from the accession of Elizabeth 1 in 1558 to the Great Fire of 1666 opens this week at the Museum of London. Bringing alive one of the most turbulent periods in Londons history, the gallery is full of treasures from the Museums unique collections, including printing plates from Londons earliest map, rare delftware pottery, exquisite Jacobean jewels, Oliver Cromwells death mask, and archaeology from the fire that nearly destroyed the city. The much loved Great Fire Experience, one of the oldest models in the Museum, has been relit with new fibre optics, visual and sound effects. As the gallery opens there is also a rare chance to see the vest believed to have been worn by Charles I at his beheading, complete with gruesome stains. The London in this gallery shows a divided metropolis: home to pleasure-seekers, who flock