I am under the impression, that the Vickers E is incomplete on the inside. The turret seems to contain not all needed parts. For example the turret traverse mechanism is missing. The ring is modelled, but there is nothing to interact with it. There seems also no way for the crew to allign the height of the gun. Also the breech mechanism seems to be absent.

Also I can´t imagine how the gunner would aim that thing at all, if he can´t look outside of the turret. There seems to be no optical sight for the gun.

Seems to me like some incomplete exhibit in a museum was taken as a sample and for the missing parts was not enough data in form of pictures available.

TMS was never about screw-exact recreation of tanks, but on the Vickers E it is very prominent.

regards