An early example of an exploding fort. It measures 14″ wide with the cannon being 7.5″ long. When the red target was hit on the fort all of the top would explode off. The cannon was replaced later with a tank which you can see is mentioned and shown on the box. The wheels are identical to the wheels on the larger Jacrim Tom Thumb cannon from just a few years before. From 1934 or 1935.
From my private collection.