It could very well be an early Wireless Set No.1, the box behind it looks like the primary battery box (which supplied the HT to the set), and the aerial base is an early one with the 'disk' watershed fitted. The aerial rods are certainly the early 5/8-in ones that were longer (and magnesium alloy) than the later 'D' rods.
Pity we can't turn the monitor round for a look at the other side to confirm it.
Chris.