Vintage Plastic Howitzer Artillery Toy Silver with LUMAR 11.00 x 20 Rubber Tires. 12" long overall. The breech pulls back and is s[pring loaded, it has a spot to load a shell. It doesn't lock open, not sure if it ever did, or just how it works. I didn't try to fire anything, it has a place in the back to hold 8 shells, no shells come with it. Some is shaking around inside. Looks complete but please check the photos, I am not familiar with these. Tires are in nice condition. Please check my other sales.