Kevin, did you import this from here, or find it over there? If there, do you have any history?
The reason I ask is that there was only one or two of the original 24 of these beasties sent over to England for evaluation, with the rest staying here and ultimately performing 'airfield defence' roles (the model having been judged as basically a waste of time). If yours was one of those shipped over early in the war, you truly have a find...
Having said that, there are two I know of here - one in the Canadian War Museum and the one you pictured with the intact mount (there are others as well). The latter I lost in a bidding war in an auction some years ago; I'm not sure where it is now but I bet I can find out - probably not before 6 June though.
