Richard,
What a piece of history you have there! Well spotted too, by the way.
Just imagine what the production line workers would have been listening to on the radio (sorry...Wireless) while that was going together.
Pity you're not closer to me, I have digital recordings of news broadcasts of WWII, including the first
full 48hrs of D Day reports. Interesting listening while working on a period military vehicle. Certainly puts one 'in the mood'.