The housing for the glove and letters was in a cavity made in the auditorium well above the sunken landing which was, itself, three steps below the level of the circle foyer. In this wall was lodged a large steel safe, with convex plate-glass replacing the outward side. The door of the safe, opposite this window, was reached from the back of the circle and concealed by a panel in the wall. Between the window and the exterior face of the wall were sliding steel doors, opened electrically by a switch at the back of the cavity. Concealed lighting came up when the doors were opened. Thus the glove and letters would be exposed to patrons on the stairs, the landing and, more distantly, in the foyer.

The safe was a make well-enough known to Alleyn. It carried a five-figure lock. This combination could be chosen by the purchaser. It was sometimes based on a key word and a very simple code. For instance, the numbers from one to zero might be placed under the letters of the alphabet from A to J and again from K to T and again from U to Z. Each number had therefore two and in the case of 1-6, three corresponding letters. Thus, if the key word was ‘night’ the number of the combination would be 49780.

Jeremy had caused the steel safe to be lined with padded yellow silk. On its floor was a book-hinged unit covered with black velvet, it had a variable tilt, and was large enough to display the glove and two documents. He had made a beautifully lettered legend which had been framed and would be hung below the wall cavity. During performances the sliding doors would be retracted and the plate glass window exposed.