In going through a very old collection of old knick knacks of past relatives which my grandmother put together, I came across a brass pin, more like a cuff link back on it not a pin, with a First World War battle tank with a gun turret mounted on the side, sort of rising up over a crest of land and with the slogan "Watch me crash through" across the bottom. On the back I can just make out "...erie Birks".
Could anybody tell me anything about it? Is it a cuff link or for some other kind of a button hole and was it worn with a uniform, possibly by a member of a tank corp? I don't know the history of it at all but several family members were in the Canadian Expeditionary Forces in the First World War.