Living in a very flat country, I could not fathom a
Mountain Gun being used here.... untill I read they were used on Walcheren during Operation Infatuate I, it sparked my interest.
The buyer is welcome to re-enact the scene as described by Derek Barton in the thread
3.7 inch Mountain Howitzer, where men of the 1st Mountain Regiment carried a 3.7-in Mountain Gun to an upstairs room of a house to fire on a pillbox - and were successful!
HTH,
Hanno