MAVtech's collection holds many cinema slides- but this is one of the most intriguing. Unlike almost every other slide it has no writing on it (including on the edges) and is striking arranged with lots of 'blank space'.
What was it used for?
It is impossible to be certain- but it probably celebrated the victory of the British Empire after World War One. The slide was found in a box with many other First World War slides, including one celebrating the victory. Although New Zealand's flag was flown by ships since 1869 (and was 'official' since 1902) it wasn't formally flown in battle until the Second World War, so the presence of the Imperial Union Jack would have made a lot of sense on a local slide.
(The New Zealand flag was flown during the Gallipoli campaign at Quinn's Post- however this was unofficial and not ordered by the military command).
Britannia, the human personification of Britain, sits at the bottom of the slide.