Interesting, thanks for the hard work you are putting into these, they will give the scenariomakers something new to play with.
And something quite looking quite different.
Now both your wagons and the ones linked by keith remind me of some of the older german wagons what I was looking up a while ago.
Yours one of the older ones taken over from the state railways as well as this one:
http://www.drehscheibe-online.de/foren/read.php?17,3002902, and keith's look pretty similar to the ones used from the 1920's-1930's onwards.
this type, the Oot
http://666kb.com/i/c56zy5vp3p6uvv9dh.jpgThere are some differences due to the loading gauge of course.
Fascinating, I wonder if there was an exchange on that topic between the countries's railways.
I know that there was an exchange on locomotives, given that Wagner toured britain and got a gold medal from the British society of locomotive engineers.