They lifted the case up and placed a large red notice, but it was after 5pm when they did it.

In the lower right hand corner of the glass case is a "no pictures" icon. The Estate does not permit photos of the materials in that case to be published, sorry! Even before they brought out additional signs, and even without flash, the case items cannot be shown here without the permission of the Estate.

You can see a reproduction of Tolkien's inscription in Christopher's copy of RotK at the very end of The Great Tales Never End.