Can anyone shed any light on what this is a model of? Is it just a toy, or a realistic model? I apologise for the state of it, but its just been unearthed from under Snails stairs by time team. It appears to be able to fire something, maybe even using a small percussion cap? despite the control wheels being bent it does elevate and traverse. Edited to add, this may well end up being auctioned for 'help them out'