Those are both for the WS19, the left hand one being for a Mk.II set (with 3-commutator dynamotor, 12V only) and the right hand one being the 'fully loaded' Canadian Mk.III spares kit with the Supply Unit No.2 (4-commutator dynamotor and the 10 Amp vibrator fuses).
The Morse key was supplied (and usually stored when not in use, I think) in the spare parts case.
Chris.
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