Alistair Petrie, the actor who played Iorek Byrnison in the stage adaptation of His Dark Materials, writes: “After the success of The His Dark Materials Poster auction on Ebay, The National Theatre kindly has given me a bear head and claw as used in the stage production of His Dark Materials to offer for auction to raise money once again for the neo natal unit at The Chelsea and Westminster Hospital. Included in the auction is the head armour I used as Iorek Byrnison each night in performance. It has been signed by the whole cast. As with the poster, these are unique pieces of important memorabilia. And we would love to raise a lot of money to help premature babies born in the Unit at the hospital.” More info on ebay.com.