Two cannons are branded 'PlayMe' on the bottom - the other two I can't see they have branding label? but wheels and designs look the same as the two 'PlayMe'.

One pencil sharpener is damaged on the trench cannon - the plastic part which holds the blade in is split, has been glued back in place, the sharpener still operates.

All cannons have a firing mechanism, the two cannons with the chains can be angle adjusted by inserting the pin on the chain in the correct hole to change vertical angle of fire.