Queensland State Archives posted a photo:
Cooktown Town Council on 10-4-1885 carried the following motion asking the Premier of Queensland that Cooktown be defended against the threat of a Russian invasion:
A WIRE BE SENT TO THE PREMIER REQUESTING HIM TO SUPPLY ARMS, AMMUNITION & A COMPETENT OFFICER TO TAKE CHARGE OF SAME, AS THE TOWN IS ENTIRELY UNPROTECTED.
This gun cast in Carron, Scotland in 1803 and two rifles were sent.
Queensland State Archives Item ID436316, Photographic material