The singing bird movement is contained in a tinplate box, very similar to those often housing musical snuff-box movements, which is screwed to a wooden baseboard also supporting the musical movement. The serial number, 135, is repeated, in ink, on this baseboard. It is also stamped on a brass framework inside the lid of the tinplate box. This supports a lever mechanism by which the on-off lever (projecting through the necessaire tray at front left) is connected to the stop and start levers, unusally positioned at the back right of the top plate of the movement.
The necessaire tray has its full set of gold, steel and turquoise implements, comprising bodkin, needle case, pillbox, scent bottle, thimble, winder, penknife, pencil, two pairs of scissors, vinaigrette and reel. The original brass and steel winding key for the bird also survives in its compartment, but is damaged. Several of the gold components have the hallmark of Charles Louis Déserre (Paris, 1809 - 1819).
The lid is lined with a mirror which has a cut-out at the top edge, to clear the stop/start lever. This cut-out was edged with a piece of plaited silk (present but loose), and a balancing piece appears formerly to have been attached to the glass right of centre.
The mother-of-pearl covering has some slight cracks, and there is some chipping to the edges of some of the cameos.
A French clock key (for winding the musical movement) has an attached label with Lady Arbuthnot's name and, on the reverse, probably in her hand, a note Presented to my grandmother Mrs James Macleay by the Hon. John Walpole Minister in Chile at Valparaiso 1833-41.