Oddly, at the time of writing (April 2011), room 62 of the British Museum displays this information board (left)...
...whilst the 'Unlucky' mummy-board itself (below right) is, unaccountably, missing.

© Trustees of the British Museum
The Ghosts of Senate House is one part of a creative research project led by Sarah Sparkes. It serves as an archive for uncanny, apocryphal stories emanating from Senate House. These stories formed part of "a Magical library for the 21st Century" an archive of writings, recordings, artwork, artefacts, and other contributions, which was first shown at the University of London as part of The Bloomsbury Festival October 2011.

The British Museum is situated next to Senate House, just to the south. Its Egyptian galleries draw tourists from around the world. In room 62, on the first floor, is - amongst other Egyptian artefacts - a painted mummy-board made of plaster and wood, originally the lid of a coffin. The painted image depicts a woman of high status, possibly a priestess of the god Amen-Ra ('the Hidden One'), and is thought to date from around 900 BC. This exhibit, number 22542, and labelled “Painted wooden mummy-board of an unidentified woman,” was acquired by the Museum in 1889, and has, ever since, been the focus of numerous strange stories, becoming known as ‘The Unlucky Mummy’.