Ok, so years ago I got 3Ø54/3795 Harbor Guard, and on the back of the box was a scene from a village where Ø3 pirates were being brought into prison. Nearby, two children watched. One was towing a toy cannon. Here’s a pic of the toy cannon. Any info would be greatly appreciated.
P.S.- It has Ø4 parts; Wheel/axle, carriage, barrel, and tow handle. (What they’re actually called I do not know.)