I couldn't find this topic, so let's kick off:

Here are my four Fordson Thames flat trucks.

Made between 1951 and 1960.

First sold from a tradebox as 30r and later individually boxed and marked 422. 

The later versions have the marking 422 and come with a rear cross member behind the rear axle as an extra strenghtening.

The difference in green can clearly be seen with the dark one being the oldest.

The brown one with maroon hubs is the rare version.