Thank you
skytrain.
What a challenge! It certainly resulted in much head scratching and opened up an interesting discussion, which of course is what the thread is all about.
I'm still non the wiser about the upper mast, but have concluded that it must be an aerial mast. As for the kit between the wheels, I'm still in dunno mode.
A little something for the weekend gentlemen, or at least for maybe the next hour:
