Shaggy,
I doubt South Ken would want to get rid of their 593 (BTW, I'm still curious where that one came from, and what model it is).
I thought Alpha Charlie arrived with all its four engines....
Without wanting to go into the current squabbles, couldn't the museum drop one of the engines for display? They're pretty well invisible from the outside, so taking one out (and replacing it with a couple of plywood panels inside the nacelle, to avoid the horrible hollow-tooth effect we saw on Alpha-Delta in NY), would not do any damage to the display, but it would add another attraction to the museum.
CJ