This is the 25g - 429 trailer in orange. It appears to have black wheels as the original color. I made the hitch wire out of a heavy paper clip. I have put tires on it and shall not repaint it as there is not much paint loss. I also found the gray trailer seen below on the left at a local flea market. It has the cast hook at the back but has the thick post war axles. I have built a tow bar for it and cleaned the rust off as best I can. I am not going to repaint it as the original paint is quite good. The gray trailer on the right is one I got off ebay with some other toys. It has the pre-war tow bar on it and the cast in hook. It still has the thicker axles though.

I also managed to collect a green one and a red one.

Below is another one I got from a chap in the UK. It needed a hitch wire but is in otherwise great shape although I may have to replace the tires. It is the one with a cast hook.